Home / 898,971.60-1,240,585-491,079.12

Finding the Fourth Proportional to 898,971.60, 1,240,585 and 491,079.12

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Solution

The fourth proportional to 898,971.60, 1,240,585 and 491,079.12 is: 677,691.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,971.60 : 1,240,585 = 491,079.12 : x
  2. Step 2: Convert to fraction form
    898,971.60/1,240,585 = 491,079.12/x
  3. Step 3: Cross multiply
    898,971.60x = 1,240,585 × 491,079.12
  4. Step 4: Simplify right side
    898,971.60x = 609,225,390,085.20
  5. Step 5: Solve for x
    x = 609,225,390,085.20/898,971.60
  6. Step 6: Final answer
    x = 677,691.48

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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.