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Finding the Fourth Proportional to 611,820.12, 918,314.16 and 375,624.12

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Solution

The fourth proportional to 611,820.12, 918,314.16 and 375,624.12 is: 563,794.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,820.12 : 918,314.16 = 375,624.12 : x
  2. Step 2: Convert to fraction form
    611,820.12/918,314.16 = 375,624.12/x
  3. Step 3: Cross multiply
    611,820.12x = 918,314.16 × 375,624.12
  4. Step 4: Simplify right side
    611,820.12x = 344,940,948,233.54
  5. Step 5: Solve for x
    x = 344,940,948,233.54/611,820.12
  6. Step 6: Final answer
    x = 563,794.71

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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.