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Finding the Fourth Proportional to 744,908.90, 1,027,903.15 and 418,147.10

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Solution

The fourth proportional to 744,908.90, 1,027,903.15 and 418,147.10 is: 577,003.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,908.90 : 1,027,903.15 = 418,147.10 : x
  2. Step 2: Convert to fraction form
    744,908.90/1,027,903.15 = 418,147.10/x
  3. Step 3: Cross multiply
    744,908.90x = 1,027,903.15 × 418,147.10
  4. Step 4: Simplify right side
    744,908.90x = 429,814,715,068.48
  5. Step 5: Solve for x
    x = 429,814,715,068.48/744,908.90
  6. Step 6: Final answer
    x = 577,003.06

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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.