Home / 769,863.60-1,154,795.40-486,428.40

Finding the Fourth Proportional to 769,863.60, 1,154,795.40 and 486,428.40

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Solution

The fourth proportional to 769,863.60, 1,154,795.40 and 486,428.40 is: 729,642.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,863.60 : 1,154,795.40 = 486,428.40 : x
  2. Step 2: Convert to fraction form
    769,863.60/1,154,795.40 = 486,428.40/x
  3. Step 3: Cross multiply
    769,863.60x = 1,154,795.40 × 486,428.40
  4. Step 4: Simplify right side
    769,863.60x = 561,725,278,749.36
  5. Step 5: Solve for x
    x = 561,725,278,749.36/769,863.60
  6. Step 6: Final answer
    x = 729,642.60

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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.