Home / 818,419.29-1,129,475.39-496,142.97

Finding the Fourth Proportional to 818,419.29, 1,129,475.39 and 496,142.97

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Solution

The fourth proportional to 818,419.29, 1,129,475.39 and 496,142.97 is: 684,711.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,419.29 : 1,129,475.39 = 496,142.97 : x
  2. Step 2: Convert to fraction form
    818,419.29/1,129,475.39 = 496,142.97/x
  3. Step 3: Cross multiply
    818,419.29x = 1,129,475.39 × 496,142.97
  4. Step 4: Simplify right side
    818,419.29x = 560,381,274,536.51
  5. Step 5: Solve for x
    x = 560,381,274,536.51/818,419.29
  6. Step 6: Final answer
    x = 684,711.71

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Double scale
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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.