Home / 979,812.60-1,469,718.90-418,903.80

Finding the Fourth Proportional to 979,812.60, 1,469,718.90 and 418,903.80

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Solution

The fourth proportional to 979,812.60, 1,469,718.90 and 418,903.80 is: 628,355.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,812.60 : 1,469,718.90 = 418,903.80 : x
  2. Step 2: Convert to fraction form
    979,812.60/1,469,718.90 = 418,903.80/x
  3. Step 3: Cross multiply
    979,812.60x = 1,469,718.90 × 418,903.80
  4. Step 4: Simplify right side
    979,812.60x = 615,670,832,141.82
  5. Step 5: Solve for x
    x = 615,670,832,141.82/979,812.60
  6. Step 6: Final answer
    x = 628,355.70

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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.