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Finding the Fourth Proportional to 872,704.96, 1,204,340.02 and 490,728.40

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Solution

The fourth proportional to 872,704.96, 1,204,340.02 and 490,728.40 is: 677,209.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,704.96 : 1,204,340.02 = 490,728.40 : x
  2. Step 2: Convert to fraction form
    872,704.96/1,204,340.02 = 490,728.40/x
  3. Step 3: Cross multiply
    872,704.96x = 1,204,340.02 × 490,728.40
  4. Step 4: Simplify right side
    872,704.96x = 591,003,851,070.57
  5. Step 5: Solve for x
    x = 591,003,851,070.57/872,704.96
  6. Step 6: Final answer
    x = 677,209.23

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.