Home / 861,065.95-1,290,899.08-300,494.11

Finding the Fourth Proportional to 861,065.95, 1,290,899.08 and 300,494.11

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Solution

The fourth proportional to 861,065.95, 1,290,899.08 and 300,494.11 is: 450,496.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,065.95 : 1,290,899.08 = 300,494.11 : x
  2. Step 2: Convert to fraction form
    861,065.95/1,290,899.08 = 300,494.11/x
  3. Step 3: Cross multiply
    861,065.95x = 1,290,899.08 × 300,494.11
  4. Step 4: Simplify right side
    861,065.95x = 387,907,570,144.42
  5. Step 5: Solve for x
    x = 387,907,570,144.42/861,065.95
  6. Step 6: Final answer
    x = 450,496.93

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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.