Home / 1,138,429.40-1,707,644.10-428,616.68

Finding the Fourth Proportional to 1,138,429.40, 1,707,644.10 and 428,616.68

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Solution

The fourth proportional to 1,138,429.40, 1,707,644.10 and 428,616.68 is: 642,925.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,429.40 : 1,707,644.10 = 428,616.68 : x
  2. Step 2: Convert to fraction form
    1,138,429.40/1,707,644.10 = 428,616.68/x
  3. Step 3: Cross multiply
    1,138,429.40x = 1,707,644.10 × 428,616.68
  4. Step 4: Simplify right side
    1,138,429.40x = 731,924,744,763.59
  5. Step 5: Solve for x
    x = 731,924,744,763.59/1,138,429.40
  6. Step 6: Final answer
    x = 642,925.02

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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.