Home / 711,344.10-981,642.44-389,047.12

Finding the Fourth Proportional to 711,344.10, 981,642.44 and 389,047.12

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Solution

The fourth proportional to 711,344.10, 981,642.44 and 389,047.12 is: 536,878.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,344.10 : 981,642.44 = 389,047.12 : x
  2. Step 2: Convert to fraction form
    711,344.10/981,642.44 = 389,047.12/x
  3. Step 3: Cross multiply
    711,344.10x = 981,642.44 × 389,047.12
  4. Step 4: Simplify right side
    711,344.10x = 381,905,164,151.77
  5. Step 5: Solve for x
    x = 381,905,164,151.77/711,344.10
  6. Step 6: Final answer
    x = 536,878.23

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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.