Home / 790,140.76-1,090,403.30-445,995.79

Finding the Fourth Proportional to 790,140.76, 1,090,403.30 and 445,995.79

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Solution

The fourth proportional to 790,140.76, 1,090,403.30 and 445,995.79 is: 615,479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,140.76 : 1,090,403.30 = 445,995.79 : x
  2. Step 2: Convert to fraction form
    790,140.76/1,090,403.30 = 445,995.79/x
  3. Step 3: Cross multiply
    790,140.76x = 1,090,403.30 × 445,995.79
  4. Step 4: Simplify right side
    790,140.76x = 486,315,279,591.09
  5. Step 5: Solve for x
    x = 486,315,279,591.09/790,140.76
  6. Step 6: Final answer
    x = 615,479.30

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