Home / 579,456,693.40-869,185,040.10-395,790,683.80

Finding the Fourth Proportional to 579,456,693.40, 869,185,040.10 and 395,790,683.80

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Solution

The fourth proportional to 579,456,693.40, 869,185,040.10 and 395,790,683.80 is: 593,686,025.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,456,693.40 : 869,185,040.10 = 395,790,683.80 : x
  2. Step 2: Convert to fraction form
    579,456,693.40/869,185,040.10 = 395,790,683.80/x
  3. Step 3: Cross multiply
    579,456,693.40x = 869,185,040.10 × 395,790,683.80
  4. Step 4: Simplify right side
    579,456,693.40x = 344,015,341,369,909,440
  5. Step 5: Solve for x
    x = 344,015,341,369,909,440/579,456,693.40
  6. Step 6: Final answer
    x = 593,686,025.70

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Half scale
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Double scale
Find fourth proportional to 579,456,694.40, 869,185,041.60 and 395,790,684.80
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.