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Finding the Fourth Proportional to 763,337.72, 1,053,438.96 and 423,806

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Solution

The fourth proportional to 763,337.72, 1,053,438.96 and 423,806 is: 584,870.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,337.72 : 1,053,438.96 = 423,806 : x
  2. Step 2: Convert to fraction form
    763,337.72/1,053,438.96 = 423,806/x
  3. Step 3: Cross multiply
    763,337.72x = 1,053,438.96 × 423,806
  4. Step 4: Simplify right side
    763,337.72x = 446,453,751,881.76
  5. Step 5: Solve for x
    x = 446,453,751,881.76/763,337.72
  6. Step 6: Final answer
    x = 584,870.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.