Home / 886,790.38-1,223,770.70-478,892.18

Finding the Fourth Proportional to 886,790.38, 1,223,770.70 and 478,892.18

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Solution

The fourth proportional to 886,790.38, 1,223,770.70 and 478,892.18 is: 660,871.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,790.38 : 1,223,770.70 = 478,892.18 : x
  2. Step 2: Convert to fraction form
    886,790.38/1,223,770.70 = 478,892.18/x
  3. Step 3: Cross multiply
    886,790.38x = 1,223,770.70 × 478,892.18
  4. Step 4: Simplify right side
    886,790.38x = 586,054,215,948.67
  5. Step 5: Solve for x
    x = 586,054,215,948.67/886,790.38
  6. Step 6: Final answer
    x = 660,871.20

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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.