Home / 579,456,880.40-869,185,320.60-395,790,870.80

Finding the Fourth Proportional to 579,456,880.40, 869,185,320.60 and 395,790,870.80

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Solution

The fourth proportional to 579,456,880.40, 869,185,320.60 and 395,790,870.80 is: 593,686,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,456,880.40 : 869,185,320.60 = 395,790,870.80 : x
  2. Step 2: Convert to fraction form
    579,456,880.40/869,185,320.60 = 395,790,870.80/x
  3. Step 3: Cross multiply
    579,456,880.40x = 869,185,320.60 × 395,790,870.80
  4. Step 4: Simplify right side
    579,456,880.40x = 344,015,614,926,851,200
  5. Step 5: Solve for x
    x = 344,015,614,926,851,200/579,456,880.40
  6. Step 6: Final answer
    x = 593,686,306.20

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Half scale
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Double scale
Find fourth proportional to 579,456,881.40, 869,185,322.10 and 395,790,871.80
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.