Home / 711,545.18-981,940.08-389,248.35

Finding the Fourth Proportional to 711,545.18, 981,940.08 and 389,248.35

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Solution

The fourth proportional to 711,545.18, 981,940.08 and 389,248.35 is: 537,166.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,545.18 : 981,940.08 = 389,248.35 : x
  2. Step 2: Convert to fraction form
    711,545.18/981,940.08 = 389,248.35/x
  3. Step 3: Cross multiply
    711,545.18x = 981,940.08 × 389,248.35
  4. Step 4: Simplify right side
    711,545.18x = 382,218,555,938.87
  5. Step 5: Solve for x
    x = 382,218,555,938.87/711,545.18
  6. Step 6: Final answer
    x = 537,166.96

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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.