Home / 387,930,961.60-581,896,442.40-345,840,834.40

Finding the Fourth Proportional to 387,930,961.60, 581,896,442.40 and 345,840,834.40

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Solution

The fourth proportional to 387,930,961.60, 581,896,442.40 and 345,840,834.40 is: 518,761,251.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,930,961.60 : 581,896,442.40 = 345,840,834.40 : x
  2. Step 2: Convert to fraction form
    387,930,961.60/581,896,442.40 = 345,840,834.40/x
  3. Step 3: Cross multiply
    387,930,961.60x = 581,896,442.40 × 345,840,834.40
  4. Step 4: Simplify right side
    387,930,961.60x = 201,243,551,174,007,520
  5. Step 5: Solve for x
    x = 201,243,551,174,007,520/387,930,961.60
  6. Step 6: Final answer
    x = 518,761,251.60

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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.