Home / 747,713.70-1,121,570.55-431,801.55

Finding the Fourth Proportional to 747,713.70, 1,121,570.55 and 431,801.55

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Solution

The fourth proportional to 747,713.70, 1,121,570.55 and 431,801.55 is: 647,702.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,713.70 : 1,121,570.55 = 431,801.55 : x
  2. Step 2: Convert to fraction form
    747,713.70/1,121,570.55 = 431,801.55/x
  3. Step 3: Cross multiply
    747,713.70x = 1,121,570.55 × 431,801.55
  4. Step 4: Simplify right side
    747,713.70x = 484,295,901,924.35
  5. Step 5: Solve for x
    x = 484,295,901,924.35/747,713.70
  6. Step 6: Final answer
    x = 647,702.33

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.