Home / 778,988.20-1,169,000.70-442,028.20

Finding the Fourth Proportional to 778,988.20, 1,169,000.70 and 442,028.20

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Solution

The fourth proportional to 778,988.20, 1,169,000.70 and 442,028.20 is: 663,336.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,988.20 : 1,169,000.70 = 442,028.20 : x
  2. Step 2: Convert to fraction form
    778,988.20/1,169,000.70 = 442,028.20/x
  3. Step 3: Cross multiply
    778,988.20x = 1,169,000.70 × 442,028.20
  4. Step 4: Simplify right side
    778,988.20x = 516,731,275,219.74
  5. Step 5: Solve for x
    x = 516,731,275,219.74/778,988.20
  6. Step 6: Final answer
    x = 663,336.46

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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.