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Finding the Fourth Proportional to 557,358.54, 769,172.96 and 315,635.92

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Solution

The fourth proportional to 557,358.54, 769,172.96 and 315,635.92 is: 435,587.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,358.54 : 769,172.96 = 315,635.92 : x
  2. Step 2: Convert to fraction form
    557,358.54/769,172.96 = 315,635.92/x
  3. Step 3: Cross multiply
    557,358.54x = 769,172.96 × 315,635.92
  4. Step 4: Simplify right side
    557,358.54x = 242,778,614,868.72
  5. Step 5: Solve for x
    x = 242,778,614,868.72/557,358.54
  6. Step 6: Final answer
    x = 435,587.86

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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.