Home / 642,919.68-963,446.40-361,836.72

Finding the Fourth Proportional to 642,919.68, 963,446.40 and 361,836.72

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Solution

The fourth proportional to 642,919.68, 963,446.40 and 361,836.72 is: 542,229.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,919.68 : 963,446.40 = 361,836.72 : x
  2. Step 2: Convert to fraction form
    642,919.68/963,446.40 = 361,836.72/x
  3. Step 3: Cross multiply
    642,919.68x = 963,446.40 × 361,836.72
  4. Step 4: Simplify right side
    642,919.68x = 348,610,285,271.81
  5. Step 5: Solve for x
    x = 348,610,285,271.81/642,919.68
  6. Step 6: Final answer
    x = 542,229.92

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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.