Home / 711,426.52-981,747.73-389,129.65

Finding the Fourth Proportional to 711,426.52, 981,747.73 and 389,129.65

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Solution

The fourth proportional to 711,426.52, 981,747.73 and 389,129.65 is: 536,987.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,426.52 : 981,747.73 = 389,129.65 : x
  2. Step 2: Convert to fraction form
    711,426.52/981,747.73 = 389,129.65/x
  3. Step 3: Cross multiply
    711,426.52x = 981,747.73 × 389,129.65
  4. Step 4: Simplify right side
    711,426.52x = 382,027,146,406.38
  5. Step 5: Solve for x
    x = 382,027,146,406.38/711,426.52
  6. Step 6: Final answer
    x = 536,987.50

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1.5x scale

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.