Home / 718,899.17-1,078,572.51-213,462.78

Finding the Fourth Proportional to 718,899.17, 1,078,572.51 and 213,462.78

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Solution

The fourth proportional to 718,899.17, 1,078,572.51 and 213,462.78 is: 320,260.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,899.17 : 1,078,572.51 = 213,462.78 : x
  2. Step 2: Convert to fraction form
    718,899.17/1,078,572.51 = 213,462.78/x
  3. Step 3: Cross multiply
    718,899.17x = 1,078,572.51 × 213,462.78
  4. Step 4: Simplify right side
    718,899.17x = 230,235,086,416.18
  5. Step 5: Solve for x
    x = 230,235,086,416.18/718,899.17
  6. Step 6: Final answer
    x = 320,260.61

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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.