Home / 866,948.80-1,300,423.20-305,910.40

Finding the Fourth Proportional to 866,948.80, 1,300,423.20 and 305,910.40

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Solution

The fourth proportional to 866,948.80, 1,300,423.20 and 305,910.40 is: 458,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,948.80 : 1,300,423.20 = 305,910.40 : x
  2. Step 2: Convert to fraction form
    866,948.80/1,300,423.20 = 305,910.40/x
  3. Step 3: Cross multiply
    866,948.80x = 1,300,423.20 × 305,910.40
  4. Step 4: Simplify right side
    866,948.80x = 397,812,981,281.28
  5. Step 5: Solve for x
    x = 397,812,981,281.28/866,948.80
  6. Step 6: Final answer
    x = 458,865.60

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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.