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Finding the Fourth Proportional to 708,328.88, 977,469.08 and 386,032.56

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Solution

The fourth proportional to 708,328.88, 977,469.08 and 386,032.56 is: 532,711.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,328.88 : 977,469.08 = 386,032.56 : x
  2. Step 2: Convert to fraction form
    708,328.88/977,469.08 = 386,032.56/x
  3. Step 3: Cross multiply
    708,328.88x = 977,469.08 × 386,032.56
  4. Step 4: Simplify right side
    708,328.88x = 377,334,891,273.25
  5. Step 5: Solve for x
    x = 377,334,891,273.25/708,328.88
  6. Step 6: Final answer
    x = 532,711.43

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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.