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Finding the Fourth Proportional to 691,564.50, 954,322.20 and 385,672.32

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Solution

The fourth proportional to 691,564.50, 954,322.20 and 385,672.32 is: 532,207.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,564.50 : 954,322.20 = 385,672.32 : x
  2. Step 2: Convert to fraction form
    691,564.50/954,322.20 = 385,672.32/x
  3. Step 3: Cross multiply
    691,564.50x = 954,322.20 × 385,672.32
  4. Step 4: Simplify right side
    691,564.50x = 368,055,656,901.50
  5. Step 5: Solve for x
    x = 368,055,656,901.50/691,564.50
  6. Step 6: Final answer
    x = 532,207.27

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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.