Home / 814,242.60-1,221,479.10-315,657

Finding the Fourth Proportional to 814,242.60, 1,221,479.10 and 315,657

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Solution

The fourth proportional to 814,242.60, 1,221,479.10 and 315,657 is: 473,530.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,242.60 : 1,221,479.10 = 315,657 : x
  2. Step 2: Convert to fraction form
    814,242.60/1,221,479.10 = 315,657/x
  3. Step 3: Cross multiply
    814,242.60x = 1,221,479.10 × 315,657
  4. Step 4: Simplify right side
    814,242.60x = 385,568,428,268.70
  5. Step 5: Solve for x
    x = 385,568,428,268.70/814,242.60
  6. Step 6: Final answer
    x = 473,530.16

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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.