Home / 661,750,366.20-990,712,361.70-642,618,490.20

Finding the Fourth Proportional to 661,750,366.20, 990,712,361.70 and 642,618,490.20

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Solution

The fourth proportional to 661,750,366.20, 990,712,361.70 and 642,618,490.20 is: 962,069,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,750,366.20 : 990,712,361.70 = 642,618,490.20 : x
  2. Step 2: Convert to fraction form
    661,750,366.20/990,712,361.70 = 642,618,490.20/x
  3. Step 3: Cross multiply
    661,750,366.20x = 990,712,361.70 × 642,618,490.20
  4. Step 4: Simplify right side
    661,750,366.20x = 636,650,082,098,130,432
  5. Step 5: Solve for x
    x = 636,650,082,098,130,432/661,750,366.20
  6. Step 6: Final answer
    x = 962,069,859.90

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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.