Home / 910,911.60-1,366,367.40-311,819.40

Finding the Fourth Proportional to 910,911.60, 1,366,367.40 and 311,819.40

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Solution

The fourth proportional to 910,911.60, 1,366,367.40 and 311,819.40 is: 467,729.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,911.60 : 1,366,367.40 = 311,819.40 : x
  2. Step 2: Convert to fraction form
    910,911.60/1,366,367.40 = 311,819.40/x
  3. Step 3: Cross multiply
    910,911.60x = 1,366,367.40 × 311,819.40
  4. Step 4: Simplify right side
    910,911.60x = 426,059,862,847.56
  5. Step 5: Solve for x
    x = 426,059,862,847.56/910,911.60
  6. Step 6: Final answer
    x = 467,729.10

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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.