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Finding the Fourth Proportional to 536,871.55, 740,887.56 and 291,856.78

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Solution

The fourth proportional to 536,871.55, 740,887.56 and 291,856.78 is: 402,764.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,871.55 : 740,887.56 = 291,856.78 : x
  2. Step 2: Convert to fraction form
    536,871.55/740,887.56 = 291,856.78/x
  3. Step 3: Cross multiply
    536,871.55x = 740,887.56 × 291,856.78
  4. Step 4: Simplify right side
    536,871.55x = 216,233,057,603.66
  5. Step 5: Solve for x
    x = 216,233,057,603.66/536,871.55
  6. Step 6: Final answer
    x = 402,764.98

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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.