Home / 487,154,759.20-730,732,138.80-123,649,115.20

Finding the Fourth Proportional to 487,154,759.20, 730,732,138.80 and 123,649,115.20

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Solution

The fourth proportional to 487,154,759.20, 730,732,138.80 and 123,649,115.20 is: 185,473,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,154,759.20 : 730,732,138.80 = 123,649,115.20 : x
  2. Step 2: Convert to fraction form
    487,154,759.20/730,732,138.80 = 123,649,115.20/x
  3. Step 3: Cross multiply
    487,154,759.20x = 730,732,138.80 × 123,649,115.20
  4. Step 4: Simplify right side
    487,154,759.20x = 90,354,382,410,823,584
  5. Step 5: Solve for x
    x = 90,354,382,410,823,584/487,154,759.20
  6. Step 6: Final answer
    x = 185,473,672.80

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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.