Home / 813,739.15-1,122,905.19-469,589.39

Finding the Fourth Proportional to 813,739.15, 1,122,905.19 and 469,589.39

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Solution

The fourth proportional to 813,739.15, 1,122,905.19 and 469,589.39 is: 648,001.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,739.15 : 1,122,905.19 = 469,589.39 : x
  2. Step 2: Convert to fraction form
    813,739.15/1,122,905.19 = 469,589.39/x
  3. Step 3: Cross multiply
    813,739.15x = 1,122,905.19 × 469,589.39
  4. Step 4: Simplify right side
    813,739.15x = 527,304,363,199.93
  5. Step 5: Solve for x
    x = 527,304,363,199.93/813,739.15
  6. Step 6: Final answer
    x = 648,001.71

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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.