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Finding the Fourth Proportional to 878,002.74, 1,211,641.74 and 475,594.74

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Solution

The fourth proportional to 878,002.74, 1,211,641.74 and 475,594.74 is: 656,319.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,002.74 : 1,211,641.74 = 475,594.74 : x
  2. Step 2: Convert to fraction form
    878,002.74/1,211,641.74 = 475,594.74/x
  3. Step 3: Cross multiply
    878,002.74x = 1,211,641.74 × 475,594.74
  4. Step 4: Simplify right side
    878,002.74x = 576,250,438,308.45
  5. Step 5: Solve for x
    x = 576,250,438,308.45/878,002.74
  6. Step 6: Final answer
    x = 656,319.64

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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.