Home / 912,109.40-1,368,164.10-576,186.20

Finding the Fourth Proportional to 912,109.40, 1,368,164.10 and 576,186.20

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Solution

The fourth proportional to 912,109.40, 1,368,164.10 and 576,186.20 is: 864,279.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,109.40 : 1,368,164.10 = 576,186.20 : x
  2. Step 2: Convert to fraction form
    912,109.40/1,368,164.10 = 576,186.20/x
  3. Step 3: Cross multiply
    912,109.40x = 1,368,164.10 × 576,186.20
  4. Step 4: Simplify right side
    912,109.40x = 788,317,273,755.42
  5. Step 5: Solve for x
    x = 788,317,273,755.42/912,109.40
  6. Step 6: Final answer
    x = 864,279.30

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.