Home / 1,981,123.80-2,971,685.70-485,215.80

Finding the Fourth Proportional to 1,981,123.80, 2,971,685.70 and 485,215.80

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Solution

The fourth proportional to 1,981,123.80, 2,971,685.70 and 485,215.80 is: 727,823.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,123.80 : 2,971,685.70 = 485,215.80 : x
  2. Step 2: Convert to fraction form
    1,981,123.80/2,971,685.70 = 485,215.80/x
  3. Step 3: Cross multiply
    1,981,123.80x = 2,971,685.70 × 485,215.80
  4. Step 4: Simplify right side
    1,981,123.80x = 1,441,908,854,274.06
  5. Step 5: Solve for x
    x = 1,441,908,854,274.06/1,981,123.80
  6. Step 6: Final answer
    x = 727,823.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.