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Finding the Fourth Proportional to 614,358.40, 921,537.60 and 348,637.90

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Solution

The fourth proportional to 614,358.40, 921,537.60 and 348,637.90 is: 522,956.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,358.40 : 921,537.60 = 348,637.90 : x
  2. Step 2: Convert to fraction form
    614,358.40/921,537.60 = 348,637.90/x
  3. Step 3: Cross multiply
    614,358.40x = 921,537.60 × 348,637.90
  4. Step 4: Simplify right side
    614,358.40x = 321,282,933,635.04
  5. Step 5: Solve for x
    x = 321,282,933,635.04/614,358.40
  6. Step 6: Final answer
    x = 522,956.85

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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.