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Finding the Fourth Proportional to 662,803.85, 914,708.46 and 499,171.70

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Solution

The fourth proportional to 662,803.85, 914,708.46 and 499,171.70 is: 688,886.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,803.85 : 914,708.46 = 499,171.70 : x
  2. Step 2: Convert to fraction form
    662,803.85/914,708.46 = 499,171.70/x
  3. Step 3: Cross multiply
    662,803.85x = 914,708.46 × 499,171.70
  4. Step 4: Simplify right side
    662,803.85x = 456,596,576,982.58
  5. Step 5: Solve for x
    x = 456,596,576,982.58/662,803.85
  6. Step 6: Final answer
    x = 688,886.43

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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.