Home / 724,135.10-1,086,721.05-303,712.70

Finding the Fourth Proportional to 724,135.10, 1,086,721.05 and 303,712.70

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Solution

The fourth proportional to 724,135.10, 1,086,721.05 and 303,712.70 is: 455,786.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,135.10 : 1,086,721.05 = 303,712.70 : x
  2. Step 2: Convert to fraction form
    724,135.10/1,086,721.05 = 303,712.70/x
  3. Step 3: Cross multiply
    724,135.10x = 1,086,721.05 × 303,712.70
  4. Step 4: Simplify right side
    724,135.10x = 330,050,984,242.34
  5. Step 5: Solve for x
    x = 330,050,984,242.34/724,135.10
  6. Step 6: Final answer
    x = 455,786.47

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Double scale
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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.