Home / 709,336.80-1,064,005.20-443,397.60

Finding the Fourth Proportional to 709,336.80, 1,064,005.20 and 443,397.60

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Solution

The fourth proportional to 709,336.80, 1,064,005.20 and 443,397.60 is: 665,096.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,336.80 : 1,064,005.20 = 443,397.60 : x
  2. Step 2: Convert to fraction form
    709,336.80/1,064,005.20 = 443,397.60/x
  3. Step 3: Cross multiply
    709,336.80x = 1,064,005.20 × 443,397.60
  4. Step 4: Simplify right side
    709,336.80x = 471,777,352,067.52
  5. Step 5: Solve for x
    x = 471,777,352,067.52/709,336.80
  6. Step 6: Final answer
    x = 665,096.40

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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.