Home / 711,130.14-981,279.23-420,750.61

Finding the Fourth Proportional to 711,130.14, 981,279.23 and 420,750.61

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Solution

The fourth proportional to 711,130.14, 981,279.23 and 420,750.61 is: 580,588.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,130.14 : 981,279.23 = 420,750.61 : x
  2. Step 2: Convert to fraction form
    711,130.14/981,279.23 = 420,750.61/x
  3. Step 3: Cross multiply
    711,130.14x = 981,279.23 × 420,750.61
  4. Step 4: Simplify right side
    711,130.14x = 412,873,830,045.88
  5. Step 5: Solve for x
    x = 412,873,830,045.88/711,130.14
  6. Step 6: Final answer
    x = 580,588.29

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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.