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Finding the Fourth Proportional to 900,687.44, 1,242,892.68 and 498,279.44

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Solution

The fourth proportional to 900,687.44, 1,242,892.68 and 498,279.44 is: 687,594.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,687.44 : 1,242,892.68 = 498,279.44 : x
  2. Step 2: Convert to fraction form
    900,687.44/1,242,892.68 = 498,279.44/x
  3. Step 3: Cross multiply
    900,687.44x = 1,242,892.68 × 498,279.44
  4. Step 4: Simplify right side
    900,687.44x = 619,307,868,570.50
  5. Step 5: Solve for x
    x = 619,307,868,570.50/900,687.44
  6. Step 6: Final answer
    x = 687,594.65

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1.5x scale

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.