Home / 711,430.62-981,753.37-389,133.74

Finding the Fourth Proportional to 711,430.62, 981,753.37 and 389,133.74

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Solution

The fourth proportional to 711,430.62, 981,753.37 and 389,133.74 is: 536,993.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,430.62 : 981,753.37 = 389,133.74 : x
  2. Step 2: Convert to fraction form
    711,430.62/981,753.37 = 389,133.74/x
  3. Step 3: Cross multiply
    711,430.62x = 981,753.37 × 389,133.74
  4. Step 4: Simplify right side
    711,430.62x = 382,033,360,625.70
  5. Step 5: Solve for x
    x = 382,033,360,625.70/711,430.62
  6. Step 6: Final answer
    x = 536,993.14

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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.