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Finding the Fourth Proportional to 517,715.28, 714,447 and 291,360.24

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Solution

The fourth proportional to 517,715.28, 714,447 and 291,360.24 is: 402,077.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,715.28 : 714,447 = 291,360.24 : x
  2. Step 2: Convert to fraction form
    517,715.28/714,447 = 291,360.24/x
  3. Step 3: Cross multiply
    517,715.28x = 714,447 × 291,360.24
  4. Step 4: Simplify right side
    517,715.28x = 208,161,449,387.28
  5. Step 5: Solve for x
    x = 208,161,449,387.28/517,715.28
  6. Step 6: Final answer
    x = 402,077.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.