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Finding the Fourth Proportional to 572,570.88, 790,171.92 and 317,945.76

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Solution

The fourth proportional to 572,570.88, 790,171.92 and 317,945.76 is: 438,778.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,570.88 : 790,171.92 = 317,945.76 : x
  2. Step 2: Convert to fraction form
    572,570.88/790,171.92 = 317,945.76/x
  3. Step 3: Cross multiply
    572,570.88x = 790,171.92 × 317,945.76
  4. Step 4: Simplify right side
    572,570.88x = 251,231,811,635.06
  5. Step 5: Solve for x
    x = 251,231,811,635.06/572,570.88
  6. Step 6: Final answer
    x = 438,778.53

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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.