Home / 668,909.20-1,003,363.80-403,488.40

Finding the Fourth Proportional to 668,909.20, 1,003,363.80 and 403,488.40

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Solution

The fourth proportional to 668,909.20, 1,003,363.80 and 403,488.40 is: 605,232.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,909.20 : 1,003,363.80 = 403,488.40 : x
  2. Step 2: Convert to fraction form
    668,909.20/1,003,363.80 = 403,488.40/x
  3. Step 3: Cross multiply
    668,909.20x = 1,003,363.80 × 403,488.40
  4. Step 4: Simplify right side
    668,909.20x = 404,845,654,279.92
  5. Step 5: Solve for x
    x = 404,845,654,279.92/668,909.20
  6. Step 6: Final answer
    x = 605,232.60

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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.