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Finding the Fourth Proportional to 571,240.20, 856,860.30 and 480,001.80

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Solution

The fourth proportional to 571,240.20, 856,860.30 and 480,001.80 is: 720,002.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,240.20 : 856,860.30 = 480,001.80 : x
  2. Step 2: Convert to fraction form
    571,240.20/856,860.30 = 480,001.80/x
  3. Step 3: Cross multiply
    571,240.20x = 856,860.30 × 480,001.80
  4. Step 4: Simplify right side
    571,240.20x = 411,294,486,348.54
  5. Step 5: Solve for x
    x = 411,294,486,348.54/571,240.20
  6. Step 6: Final answer
    x = 720,002.70

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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.