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Finding the Fourth Proportional to 520,876.52, 718,837.56 and 291,420.12

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Solution

The fourth proportional to 520,876.52, 718,837.56 and 291,420.12 is: 402,175.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,876.52 : 718,837.56 = 291,420.12 : x
  2. Step 2: Convert to fraction form
    520,876.52/718,837.56 = 291,420.12/x
  3. Step 3: Cross multiply
    520,876.52x = 718,837.56 × 291,420.12
  4. Step 4: Simplify right side
    520,876.52x = 209,483,727,995.71
  5. Step 5: Solve for x
    x = 209,483,727,995.71/520,876.52
  6. Step 6: Final answer
    x = 402,175.41

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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.