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Finding the Fourth Proportional to 518,334.80, 715,360.12 and 288,913.04

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Solution

The fourth proportional to 518,334.80, 715,360.12 and 288,913.04 is: 398,732.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,334.80 : 715,360.12 = 288,913.04 : x
  2. Step 2: Convert to fraction form
    518,334.80/715,360.12 = 288,913.04/x
  3. Step 3: Cross multiply
    518,334.80x = 715,360.12 × 288,913.04
  4. Step 4: Simplify right side
    518,334.80x = 206,676,863,387.16
  5. Step 5: Solve for x
    x = 206,676,863,387.16/518,334.80
  6. Step 6: Final answer
    x = 398,732.37

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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.