Home / 778,977.60-1,168,855.20-442,276.80

Finding the Fourth Proportional to 778,977.60, 1,168,855.20 and 442,276.80

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Solution

The fourth proportional to 778,977.60, 1,168,855.20 and 442,276.80 is: 663,635.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,977.60 : 1,168,855.20 = 442,276.80 : x
  2. Step 2: Convert to fraction form
    778,977.60/1,168,855.20 = 442,276.80/x
  3. Step 3: Cross multiply
    778,977.60x = 1,168,855.20 × 442,276.80
  4. Step 4: Simplify right side
    778,977.60x = 516,957,537,519.36
  5. Step 5: Solve for x
    x = 516,957,537,519.36/778,977.60
  6. Step 6: Final answer
    x = 663,635.95

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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.