Home / 518,795.15-778,343.09-215,132.90

Finding the Fourth Proportional to 518,795.15, 778,343.09 and 215,132.90

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Solution

The fourth proportional to 518,795.15, 778,343.09 and 215,132.90 is: 322,761.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,795.15 : 778,343.09 = 215,132.90 : x
  2. Step 2: Convert to fraction form
    518,795.15/778,343.09 = 215,132.90/x
  3. Step 3: Cross multiply
    518,795.15x = 778,343.09 × 215,132.90
  4. Step 4: Simplify right side
    518,795.15x = 167,447,201,179.28
  5. Step 5: Solve for x
    x = 167,447,201,179.28/518,795.15
  6. Step 6: Final answer
    x = 322,761.70

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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.