Home / 660,422,114.40-990,633,171.60-442,743,880.80

Finding the Fourth Proportional to 660,422,114.40, 990,633,171.60 and 442,743,880.80

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Solution

The fourth proportional to 660,422,114.40, 990,633,171.60 and 442,743,880.80 is: 664,115,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,422,114.40 : 990,633,171.60 = 442,743,880.80 : x
  2. Step 2: Convert to fraction form
    660,422,114.40/990,633,171.60 = 442,743,880.80/x
  3. Step 3: Cross multiply
    660,422,114.40x = 990,633,171.60 × 442,743,880.80
  4. Step 4: Simplify right side
    660,422,114.40x = 438,596,774,843,396,352
  5. Step 5: Solve for x
    x = 438,596,774,843,396,352/660,422,114.40
  6. Step 6: Final answer
    x = 664,115,821.20

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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.