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Finding the Fourth Proportional to 665,963.80, 999,291.30 and 292,024.60

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Solution

The fourth proportional to 665,963.80, 999,291.30 and 292,024.60 is: 438,188.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,963.80 : 999,291.30 = 292,024.60 : x
  2. Step 2: Convert to fraction form
    665,963.80/999,291.30 = 292,024.60/x
  3. Step 3: Cross multiply
    665,963.80x = 999,291.30 × 292,024.60
  4. Step 4: Simplify right side
    665,963.80x = 291,817,642,165.98
  5. Step 5: Solve for x
    x = 291,817,642,165.98/665,963.80
  6. Step 6: Final answer
    x = 438,188.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.