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Finding the Fourth Proportional to 708,423.32, 977,595.54 and 386,126.48

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Solution

The fourth proportional to 708,423.32, 977,595.54 and 386,126.48 is: 532,838.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,423.32 : 977,595.54 = 386,126.48 : x
  2. Step 2: Convert to fraction form
    708,423.32/977,595.54 = 386,126.48/x
  3. Step 3: Cross multiply
    708,423.32x = 977,595.54 × 386,126.48
  4. Step 4: Simplify right side
    708,423.32x = 377,475,524,723.90
  5. Step 5: Solve for x
    x = 377,475,524,723.90/708,423.32
  6. Step 6: Final answer
    x = 532,838.93

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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.