Home / 1,247,729.60-1,870,672.80-499,390.40

Finding the Fourth Proportional to 1,247,729.60, 1,870,672.80 and 499,390.40

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Solution

The fourth proportional to 1,247,729.60, 1,870,672.80 and 499,390.40 is: 748,716.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,729.60 : 1,870,672.80 = 499,390.40 : x
  2. Step 2: Convert to fraction form
    1,247,729.60/1,870,672.80 = 499,390.40/x
  3. Step 3: Cross multiply
    1,247,729.60x = 1,870,672.80 × 499,390.40
  4. Step 4: Simplify right side
    1,247,729.60x = 934,196,037,861.12
  5. Step 5: Solve for x
    x = 934,196,037,861.12/1,247,729.60
  6. Step 6: Final answer
    x = 748,716.74

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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.