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Finding the Fourth Proportional to 878,000.88, 1,211,641.24 and 475,592.88

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Solution

The fourth proportional to 878,000.88, 1,211,641.24 and 475,592.88 is: 656,318.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,000.88 : 1,211,641.24 = 475,592.88 : x
  2. Step 2: Convert to fraction form
    878,000.88/1,211,641.24 = 475,592.88/x
  3. Step 3: Cross multiply
    878,000.88x = 1,211,641.24 × 475,592.88
  4. Step 4: Simplify right side
    878,000.88x = 576,247,946,858.37
  5. Step 5: Solve for x
    x = 576,247,946,858.37/878,000.88
  6. Step 6: Final answer
    x = 656,318.19

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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.