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Finding the Fourth Proportional to 918,573.96, 1,375,272.84 and 693,218.20

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Solution

The fourth proportional to 918,573.96, 1,375,272.84 and 693,218.20 is: 1,037,874.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,573.96 : 1,375,272.84 = 693,218.20 : x
  2. Step 2: Convert to fraction form
    918,573.96/1,375,272.84 = 693,218.20/x
  3. Step 3: Cross multiply
    918,573.96x = 1,375,272.84 × 693,218.20
  4. Step 4: Simplify right side
    918,573.96x = 953,364,162,653.69
  5. Step 5: Solve for x
    x = 953,364,162,653.69/918,573.96
  6. Step 6: Final answer
    x = 1,037,874.14

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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.