Home / 1,109,120.20-1,663,680.60-310,519.40

Finding the Fourth Proportional to 1,109,120.20, 1,663,680.60 and 310,519.40

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Solution

The fourth proportional to 1,109,120.20, 1,663,680.60 and 310,519.40 is: 465,779.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,120.20 : 1,663,680.60 = 310,519.40 : x
  2. Step 2: Convert to fraction form
    1,109,120.20/1,663,680.60 = 310,519.40/x
  3. Step 3: Cross multiply
    1,109,120.20x = 1,663,680.60 × 310,519.40
  4. Step 4: Simplify right side
    1,109,120.20x = 516,605,101,703.64
  5. Step 5: Solve for x
    x = 516,605,101,703.64/1,109,120.20
  6. Step 6: Final answer
    x = 465,779.18

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Half scale
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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.