Home / 724,412.20-1,086,569.70-191,921.80

Finding the Fourth Proportional to 724,412.20, 1,086,569.70 and 191,921.80

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Solution

The fourth proportional to 724,412.20, 1,086,569.70 and 191,921.80 is: 287,869.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,412.20 : 1,086,569.70 = 191,921.80 : x
  2. Step 2: Convert to fraction form
    724,412.20/1,086,569.70 = 191,921.80/x
  3. Step 3: Cross multiply
    724,412.20x = 1,086,569.70 × 191,921.80
  4. Step 4: Simplify right side
    724,412.20x = 208,536,412,649.46
  5. Step 5: Solve for x
    x = 208,536,412,649.46/724,412.20
  6. Step 6: Final answer
    x = 287,869.82

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1.5x scale

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.