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Finding the Fourth Proportional to 611,634.34, 917,264.25 and 291,617.47

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Solution

The fourth proportional to 611,634.34, 917,264.25 and 291,617.47 is: 437,336.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,634.34 : 917,264.25 = 291,617.47 : x
  2. Step 2: Convert to fraction form
    611,634.34/917,264.25 = 291,617.47/x
  3. Step 3: Cross multiply
    611,634.34x = 917,264.25 × 291,617.47
  4. Step 4: Simplify right side
    611,634.34x = 267,490,275,893.42
  5. Step 5: Solve for x
    x = 267,490,275,893.42/611,634.34
  6. Step 6: Final answer
    x = 437,336.91

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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.