Home / 828,125.10-1,242,187.65-492,201.90

Finding the Fourth Proportional to 828,125.10, 1,242,187.65 and 492,201.90

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Solution

The fourth proportional to 828,125.10, 1,242,187.65 and 492,201.90 is: 738,302.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,125.10 : 1,242,187.65 = 492,201.90 : x
  2. Step 2: Convert to fraction form
    828,125.10/1,242,187.65 = 492,201.90/x
  3. Step 3: Cross multiply
    828,125.10x = 1,242,187.65 × 492,201.90
  4. Step 4: Simplify right side
    828,125.10x = 611,407,121,486.54
  5. Step 5: Solve for x
    x = 611,407,121,486.54/828,125.10
  6. Step 6: Final answer
    x = 738,302.85

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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.