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Finding the Fourth Proportional to 559,658.77, 772,331.76 and 317,954.60

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Solution

The fourth proportional to 559,658.77, 772,331.76 and 317,954.60 is: 438,778.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,658.77 : 772,331.76 = 317,954.60 : x
  2. Step 2: Convert to fraction form
    559,658.77/772,331.76 = 317,954.60/x
  3. Step 3: Cross multiply
    559,658.77x = 772,331.76 × 317,954.60
  4. Step 4: Simplify right side
    559,658.77x = 245,566,438,110.96
  5. Step 5: Solve for x
    x = 245,566,438,110.96/559,658.77
  6. Step 6: Final answer
    x = 438,778.86

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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.