Home / 720,568.23-994,435.77-398,271.45

Finding the Fourth Proportional to 720,568.23, 994,435.77 and 398,271.45

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Solution

The fourth proportional to 720,568.23, 994,435.77 and 398,271.45 is: 549,643.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,568.23 : 994,435.77 = 398,271.45 : x
  2. Step 2: Convert to fraction form
    720,568.23/994,435.77 = 398,271.45/x
  3. Step 3: Cross multiply
    720,568.23x = 994,435.77 × 398,271.45
  4. Step 4: Simplify right side
    720,568.23x = 396,055,376,049.77
  5. Step 5: Solve for x
    x = 396,055,376,049.77/720,568.23
  6. Step 6: Final answer
    x = 549,643.13

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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.