Home / 518,401.41-715,397.18-288,973.26

Finding the Fourth Proportional to 518,401.41, 715,397.18 and 288,973.26

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Solution

The fourth proportional to 518,401.41, 715,397.18 and 288,973.26 is: 398,784.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,401.41 : 715,397.18 = 288,973.26 : x
  2. Step 2: Convert to fraction form
    518,401.41/715,397.18 = 288,973.26/x
  3. Step 3: Cross multiply
    518,401.41x = 715,397.18 × 288,973.26
  4. Step 4: Simplify right side
    518,401.41x = 206,730,655,299.41
  5. Step 5: Solve for x
    x = 206,730,655,299.41/518,401.41
  6. Step 6: Final answer
    x = 398,784.90

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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.