Home / 767,514.60-1,151,271.90-487,578.60

Finding the Fourth Proportional to 767,514.60, 1,151,271.90 and 487,578.60

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Solution

The fourth proportional to 767,514.60, 1,151,271.90 and 487,578.60 is: 731,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,514.60 : 1,151,271.90 = 487,578.60 : x
  2. Step 2: Convert to fraction form
    767,514.60/1,151,271.90 = 487,578.60/x
  3. Step 3: Cross multiply
    767,514.60x = 1,151,271.90 × 487,578.60
  4. Step 4: Simplify right side
    767,514.60x = 561,335,541,221.34
  5. Step 5: Solve for x
    x = 561,335,541,221.34/767,514.60
  6. Step 6: Final answer
    x = 731,367.90

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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.