Home / 861,497.76-1,188,725.04-479,514.72

Finding the Fourth Proportional to 861,497.76, 1,188,725.04 and 479,514.72

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Solution

The fourth proportional to 861,497.76, 1,188,725.04 and 479,514.72 is: 661,651.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,497.76 : 1,188,725.04 = 479,514.72 : x
  2. Step 2: Convert to fraction form
    861,497.76/1,188,725.04 = 479,514.72/x
  3. Step 3: Cross multiply
    861,497.76x = 1,188,725.04 × 479,514.72
  4. Step 4: Simplify right side
    861,497.76x = 570,011,154,712.59
  5. Step 5: Solve for x
    x = 570,011,154,712.59/861,497.76
  6. Step 6: Final answer
    x = 661,651.35

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.