Home / 723,752.40-1,085,628.60-391,976.40

Finding the Fourth Proportional to 723,752.40, 1,085,628.60 and 391,976.40

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Solution

The fourth proportional to 723,752.40, 1,085,628.60 and 391,976.40 is: 587,964.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,752.40 : 1,085,628.60 = 391,976.40 : x
  2. Step 2: Convert to fraction form
    723,752.40/1,085,628.60 = 391,976.40/x
  3. Step 3: Cross multiply
    723,752.40x = 1,085,628.60 × 391,976.40
  4. Step 4: Simplify right side
    723,752.40x = 425,540,790,365.04
  5. Step 5: Solve for x
    x = 425,540,790,365.04/723,752.40
  6. Step 6: Final answer
    x = 587,964.60

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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.