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Finding the Fourth Proportional to 863,631.36, 1,294,920 and 357,793.92

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Solution

The fourth proportional to 863,631.36, 1,294,920 and 357,793.92 is: 536,472.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,631.36 : 1,294,920 = 357,793.92 : x
  2. Step 2: Convert to fraction form
    863,631.36/1,294,920 = 357,793.92/x
  3. Step 3: Cross multiply
    863,631.36x = 1,294,920 × 357,793.92
  4. Step 4: Simplify right side
    863,631.36x = 463,314,502,886.40
  5. Step 5: Solve for x
    x = 463,314,502,886.40/863,631.36
  6. Step 6: Final answer
    x = 536,472.53

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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.