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Finding the Fourth Proportional to 614,553.40, 921,873.30 and 348,441.40

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Solution

The fourth proportional to 614,553.40, 921,873.30 and 348,441.40 is: 522,686.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,553.40 : 921,873.30 = 348,441.40 : x
  2. Step 2: Convert to fraction form
    614,553.40/921,873.30 = 348,441.40/x
  3. Step 3: Cross multiply
    614,553.40x = 921,873.30 × 348,441.40
  4. Step 4: Simplify right side
    614,553.40x = 321,218,823,274.62
  5. Step 5: Solve for x
    x = 321,218,823,274.62/614,553.40
  6. Step 6: Final answer
    x = 522,686.59

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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.