Home / 753,377.80-1,128,317.10-515,432.20

Finding the Fourth Proportional to 753,377.80, 1,128,317.10 and 515,432.20

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Solution

The fourth proportional to 753,377.80, 1,128,317.10 and 515,432.20 is: 771,951.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,377.80 : 1,128,317.10 = 515,432.20 : x
  2. Step 2: Convert to fraction form
    753,377.80/1,128,317.10 = 515,432.20/x
  3. Step 3: Cross multiply
    753,377.80x = 1,128,317.10 × 515,432.20
  4. Step 4: Simplify right side
    753,377.80x = 581,570,965,150.62
  5. Step 5: Solve for x
    x = 581,570,965,150.62/753,377.80
  6. Step 6: Final answer
    x = 771,951.29

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Double scale
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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.