Home / 818,154.23-1,129,086.15-455,555.12

Finding the Fourth Proportional to 818,154.23, 1,129,086.15 and 455,555.12

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Solution

The fourth proportional to 818,154.23, 1,129,086.15 and 455,555.12 is: 628,684.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,154.23 : 1,129,086.15 = 455,555.12 : x
  2. Step 2: Convert to fraction form
    818,154.23/1,129,086.15 = 455,555.12/x
  3. Step 3: Cross multiply
    818,154.23x = 1,129,086.15 × 455,555.12
  4. Step 4: Simplify right side
    818,154.23x = 514,360,976,553.59
  5. Step 5: Solve for x
    x = 514,360,976,553.59/818,154.23
  6. Step 6: Final answer
    x = 628,684.61

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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.