Home / 778,979.20-1,168,987.20-442,019.20

Finding the Fourth Proportional to 778,979.20, 1,168,987.20 and 442,019.20

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Solution

The fourth proportional to 778,979.20, 1,168,987.20 and 442,019.20 is: 663,322.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,979.20 : 1,168,987.20 = 442,019.20 : x
  2. Step 2: Convert to fraction form
    778,979.20/1,168,987.20 = 442,019.20/x
  3. Step 3: Cross multiply
    778,979.20x = 1,168,987.20 × 442,019.20
  4. Step 4: Simplify right side
    778,979.20x = 516,714,786,954.24
  5. Step 5: Solve for x
    x = 516,714,786,954.24/778,979.20
  6. Step 6: Final answer
    x = 663,322.96

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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.