Home / 779,712.20-1,169,568.30-479,218.40

Finding the Fourth Proportional to 779,712.20, 1,169,568.30 and 479,218.40

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Solution

The fourth proportional to 779,712.20, 1,169,568.30 and 479,218.40 is: 718,827.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,712.20 : 1,169,568.30 = 479,218.40 : x
  2. Step 2: Convert to fraction form
    779,712.20/1,169,568.30 = 479,218.40/x
  3. Step 3: Cross multiply
    779,712.20x = 1,169,568.30 × 479,218.40
  4. Step 4: Simplify right side
    779,712.20x = 560,478,649,416.72
  5. Step 5: Solve for x
    x = 560,478,649,416.72/779,712.20
  6. Step 6: Final answer
    x = 718,827.60

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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.