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Finding the Fourth Proportional to 615,240.90, 923,007.15 and 315,767.70

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Solution

The fourth proportional to 615,240.90, 923,007.15 and 315,767.70 is: 473,726.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,240.90 : 923,007.15 = 315,767.70 : x
  2. Step 2: Convert to fraction form
    615,240.90/923,007.15 = 315,767.70/x
  3. Step 3: Cross multiply
    615,240.90x = 923,007.15 × 315,767.70
  4. Step 4: Simplify right side
    615,240.90x = 291,455,844,839.06
  5. Step 5: Solve for x
    x = 291,455,844,839.06/615,240.90
  6. Step 6: Final answer
    x = 473,726.38

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1.5x scale

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.