Home / 916,213.60-1,375,357.20-542,447.20

Finding the Fourth Proportional to 916,213.60, 1,375,357.20 and 542,447.20

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Solution

The fourth proportional to 916,213.60, 1,375,357.20 and 542,447.20 is: 814,284.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,213.60 : 1,375,357.20 = 542,447.20 : x
  2. Step 2: Convert to fraction form
    916,213.60/1,375,357.20 = 542,447.20/x
  3. Step 3: Cross multiply
    916,213.60x = 1,375,357.20 × 542,447.20
  4. Step 4: Simplify right side
    916,213.60x = 746,058,662,139.84
  5. Step 5: Solve for x
    x = 746,058,662,139.84/916,213.60
  6. Step 6: Final answer
    x = 814,284.64

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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.