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Finding the Fourth Proportional to 571,711.40, 856,952.70 and 216,588.20

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Solution

The fourth proportional to 571,711.40, 856,952.70 and 216,588.20 is: 324,649.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,711.40 : 856,952.70 = 216,588.20 : x
  2. Step 2: Convert to fraction form
    571,711.40/856,952.70 = 216,588.20/x
  3. Step 3: Cross multiply
    571,711.40x = 856,952.70 × 216,588.20
  4. Step 4: Simplify right side
    571,711.40x = 185,605,842,778.14
  5. Step 5: Solve for x
    x = 185,605,842,778.14/571,711.40
  6. Step 6: Final answer
    x = 324,649.54

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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.