Home / 711,543.67-981,938.01-389,246.84

Finding the Fourth Proportional to 711,543.67, 981,938.01 and 389,246.84

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Solution

The fourth proportional to 711,543.67, 981,938.01 and 389,246.84 is: 537,164.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,543.67 : 981,938.01 = 389,246.84 : x
  2. Step 2: Convert to fraction form
    711,543.67/981,938.01 = 389,246.84/x
  3. Step 3: Cross multiply
    711,543.67x = 981,938.01 × 389,246.84
  4. Step 4: Simplify right side
    711,543.67x = 382,216,272,816.63
  5. Step 5: Solve for x
    x = 382,216,272,816.63/711,543.67
  6. Step 6: Final answer
    x = 537,164.89

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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.