Home / 718,561.96-1,077,408.79-286,345.90

Finding the Fourth Proportional to 718,561.96, 1,077,408.79 and 286,345.90

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Solution

The fourth proportional to 718,561.96, 1,077,408.79 and 286,345.90 is: 429,345.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,561.96 : 1,077,408.79 = 286,345.90 : x
  2. Step 2: Convert to fraction form
    718,561.96/1,077,408.79 = 286,345.90/x
  3. Step 3: Cross multiply
    718,561.96x = 1,077,408.79 × 286,345.90
  4. Step 4: Simplify right side
    718,561.96x = 308,511,592,691.92
  5. Step 5: Solve for x
    x = 308,511,592,691.92/718,561.96
  6. Step 6: Final answer
    x = 429,345.85

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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.