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Finding the Fourth Proportional to 521,534.90, 719,658.60 and 292,060.28

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Solution

The fourth proportional to 521,534.90, 719,658.60 and 292,060.28 is: 403,009.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,534.90 : 719,658.60 = 292,060.28 : x
  2. Step 2: Convert to fraction form
    521,534.90/719,658.60 = 292,060.28/x
  3. Step 3: Cross multiply
    521,534.90x = 719,658.60 × 292,060.28
  4. Step 4: Simplify right side
    521,534.90x = 210,183,692,220.41
  5. Step 5: Solve for x
    x = 210,183,692,220.41/521,534.90
  6. Step 6: Final answer
    x = 403,009.83

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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.