Home / 741,707.20-1,112,301.60-386,603.20

Finding the Fourth Proportional to 741,707.20, 1,112,301.60 and 386,603.20

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Solution

The fourth proportional to 741,707.20, 1,112,301.60 and 386,603.20 is: 579,769.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    741,707.20 : 1,112,301.60 = 386,603.20 : x
  2. Step 2: Convert to fraction form
    741,707.20/1,112,301.60 = 386,603.20/x
  3. Step 3: Cross multiply
    741,707.20x = 1,112,301.60 × 386,603.20
  4. Step 4: Simplify right side
    741,707.20x = 430,019,357,925.12
  5. Step 5: Solve for x
    x = 430,019,357,925.12/741,707.20
  6. Step 6: Final answer
    x = 579,769.70

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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.