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Finding the Fourth Proportional to 521,017.02, 719,042.12 and 291,597.30

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Solution

The fourth proportional to 521,017.02, 719,042.12 and 291,597.30 is: 402,425.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,017.02 : 719,042.12 = 291,597.30 : x
  2. Step 2: Convert to fraction form
    521,017.02/719,042.12 = 291,597.30/x
  3. Step 3: Cross multiply
    521,017.02x = 719,042.12 × 291,597.30
  4. Step 4: Simplify right side
    521,017.02x = 209,670,740,778.28
  5. Step 5: Solve for x
    x = 209,670,740,778.28/521,017.02
  6. Step 6: Final answer
    x = 402,425.90

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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.