Home / 518,444.50-777,972.94-218,905.70

Finding the Fourth Proportional to 518,444.50, 777,972.94 and 218,905.70

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Solution

The fourth proportional to 518,444.50, 777,972.94 and 218,905.70 is: 328,487.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,444.50 : 777,972.94 = 218,905.70 : x
  2. Step 2: Convert to fraction form
    518,444.50/777,972.94 = 218,905.70/x
  3. Step 3: Cross multiply
    518,444.50x = 777,972.94 × 218,905.70
  4. Step 4: Simplify right side
    518,444.50x = 170,302,711,011.76
  5. Step 5: Solve for x
    x = 170,302,711,011.76/518,444.50
  6. Step 6: Final answer
    x = 328,487.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.