Home / 715,291.60-1,072,937.40-315,726.70

Finding the Fourth Proportional to 715,291.60, 1,072,937.40 and 315,726.70

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Solution

The fourth proportional to 715,291.60, 1,072,937.40 and 315,726.70 is: 473,590.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,291.60 : 1,072,937.40 = 315,726.70 : x
  2. Step 2: Convert to fraction form
    715,291.60/1,072,937.40 = 315,726.70/x
  3. Step 3: Cross multiply
    715,291.60x = 1,072,937.40 × 315,726.70
  4. Step 4: Simplify right side
    715,291.60x = 338,754,984,608.58
  5. Step 5: Solve for x
    x = 338,754,984,608.58/715,291.60
  6. Step 6: Final answer
    x = 473,590.05

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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.