Home / 720,619.14-994,454.67-398,329.16

Finding the Fourth Proportional to 720,619.14, 994,454.67 and 398,329.16

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Solution

The fourth proportional to 720,619.14, 994,454.67 and 398,329.16 is: 549,694.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,619.14 : 994,454.67 = 398,329.16 : x
  2. Step 2: Convert to fraction form
    720,619.14/994,454.67 = 398,329.16/x
  3. Step 3: Cross multiply
    720,619.14x = 994,454.67 × 398,329.16
  4. Step 4: Simplify right side
    720,619.14x = 396,120,288,386.90
  5. Step 5: Solve for x
    x = 396,120,288,386.90/720,619.14
  6. Step 6: Final answer
    x = 549,694.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.