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Finding the Fourth Proportional to 708,337.03, 977,476.64 and 386,040.20

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Solution

The fourth proportional to 708,337.03, 977,476.64 and 386,040.20 is: 532,719.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,337.03 : 977,476.64 = 386,040.20 : x
  2. Step 2: Convert to fraction form
    708,337.03/977,476.64 = 386,040.20/x
  3. Step 3: Cross multiply
    708,337.03x = 977,476.64 × 386,040.20
  4. Step 4: Simplify right side
    708,337.03x = 377,345,277,600.93
  5. Step 5: Solve for x
    x = 377,345,277,600.93/708,337.03
  6. Step 6: Final answer
    x = 532,719.96

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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.