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Finding the Fourth Proportional to 817,891.76, 1,223,420.46 and 574,715.80

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Solution

The fourth proportional to 817,891.76, 1,223,420.46 and 574,715.80 is: 859,672.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,891.76 : 1,223,420.46 = 574,715.80 : x
  2. Step 2: Convert to fraction form
    817,891.76/1,223,420.46 = 574,715.80/x
  3. Step 3: Cross multiply
    817,891.76x = 1,223,420.46 × 574,715.80
  4. Step 4: Simplify right side
    817,891.76x = 703,119,068,405.27
  5. Step 5: Solve for x
    x = 703,119,068,405.27/817,891.76
  6. Step 6: Final answer
    x = 859,672.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.