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Finding the Fourth Proportional to 625,980.15, 863,853.61 and 339,500.46

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Solution

The fourth proportional to 625,980.15, 863,853.61 and 339,500.46 is: 468,511.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,980.15 : 863,853.61 = 339,500.46 : x
  2. Step 2: Convert to fraction form
    625,980.15/863,853.61 = 339,500.46/x
  3. Step 3: Cross multiply
    625,980.15x = 863,853.61 × 339,500.46
  4. Step 4: Simplify right side
    625,980.15x = 293,278,700,994.92
  5. Step 5: Solve for x
    x = 293,278,700,994.92/625,980.15
  6. Step 6: Final answer
    x = 468,511.18

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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.