Home / 445,437,977.60-668,156,966.40-398,576,691.20

Finding the Fourth Proportional to 445,437,977.60, 668,156,966.40 and 398,576,691.20

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Solution

The fourth proportional to 445,437,977.60, 668,156,966.40 and 398,576,691.20 is: 597,865,036.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,437,977.60 : 668,156,966.40 = 398,576,691.20 : x
  2. Step 2: Convert to fraction form
    445,437,977.60/668,156,966.40 = 398,576,691.20/x
  3. Step 3: Cross multiply
    445,437,977.60x = 668,156,966.40 × 398,576,691.20
  4. Step 4: Simplify right side
    445,437,977.60x = 266,311,792,869,941,568
  5. Step 5: Solve for x
    x = 266,311,792,869,941,568/445,437,977.60
  6. Step 6: Final answer
    x = 597,865,036.80

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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.