Home / 916,205.60-1,375,345.20-542,439.20

Finding the Fourth Proportional to 916,205.60, 1,375,345.20 and 542,439.20

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Solution

The fourth proportional to 916,205.60, 1,375,345.20 and 542,439.20 is: 814,272.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,205.60 : 1,375,345.20 = 542,439.20 : x
  2. Step 2: Convert to fraction form
    916,205.60/1,375,345.20 = 542,439.20/x
  3. Step 3: Cross multiply
    916,205.60x = 1,375,345.20 × 542,439.20
  4. Step 4: Simplify right side
    916,205.60x = 746,041,150,011.84
  5. Step 5: Solve for x
    x = 746,041,150,011.84/916,205.60
  6. Step 6: Final answer
    x = 814,272.64

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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.