Home / 638,034.90-880,550.21-476,609.70

Finding the Fourth Proportional to 638,034.90, 880,550.21 and 476,609.70

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Solution

The fourth proportional to 638,034.90, 880,550.21 and 476,609.70 is: 657,767.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,034.90 : 880,550.21 = 476,609.70 : x
  2. Step 2: Convert to fraction form
    638,034.90/880,550.21 = 476,609.70/x
  3. Step 3: Cross multiply
    638,034.90x = 880,550.21 × 476,609.70
  4. Step 4: Simplify right side
    638,034.90x = 419,678,771,423.04
  5. Step 5: Solve for x
    x = 419,678,771,423.04/638,034.90
  6. Step 6: Final answer
    x = 657,767.74

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Double scale
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Similar ratio
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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.