Home / 487,155,890.70-730,733,836.05-383,843,760.30

Finding the Fourth Proportional to 487,155,890.70, 730,733,836.05 and 383,843,760.30

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Solution

The fourth proportional to 487,155,890.70, 730,733,836.05 and 383,843,760.30 is: 575,765,640.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,155,890.70 : 730,733,836.05 = 383,843,760.30 : x
  2. Step 2: Convert to fraction form
    487,155,890.70/730,733,836.05 = 383,843,760.30/x
  3. Step 3: Cross multiply
    487,155,890.70x = 730,733,836.05 × 383,843,760.30
  4. Step 4: Simplify right side
    487,155,890.70x = 280,487,623,407,875,680
  5. Step 5: Solve for x
    x = 280,487,623,407,875,680/487,155,890.70
  6. Step 6: Final answer
    x = 575,765,640.45

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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.