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Finding the Fourth Proportional to 777,776.64, 1,165,832.96 and 555,486.72

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Solution

The fourth proportional to 777,776.64, 1,165,832.96 and 555,486.72 is: 832,635.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,776.64 : 1,165,832.96 = 555,486.72 : x
  2. Step 2: Convert to fraction form
    777,776.64/1,165,832.96 = 555,486.72/x
  3. Step 3: Cross multiply
    777,776.64x = 1,165,832.96 × 555,486.72
  4. Step 4: Simplify right side
    777,776.64x = 647,604,727,018.29
  5. Step 5: Solve for x
    x = 647,604,727,018.29/777,776.64
  6. Step 6: Final answer
    x = 832,635.87

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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.