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Finding the Fourth Proportional to 521,013.02, 719,036.60 and 291,593.30

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Solution

The fourth proportional to 521,013.02, 719,036.60 and 291,593.30 is: 402,420.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,013.02 : 719,036.60 = 291,593.30 : x
  2. Step 2: Convert to fraction form
    521,013.02/719,036.60 = 291,593.30/x
  3. Step 3: Cross multiply
    521,013.02x = 719,036.60 × 291,593.30
  4. Step 4: Simplify right side
    521,013.02x = 209,666,249,961.63
  5. Step 5: Solve for x
    x = 209,666,249,961.63/521,013.02
  6. Step 6: Final answer
    x = 402,420.37

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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.