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Finding the Fourth Proportional to 673,251.43, 928,959.86 and 401,344.63

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Solution

The fourth proportional to 673,251.43, 928,959.86 and 401,344.63 is: 553,779.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,251.43 : 928,959.86 = 401,344.63 : x
  2. Step 2: Convert to fraction form
    673,251.43/928,959.86 = 401,344.63/x
  3. Step 3: Cross multiply
    673,251.43x = 928,959.86 × 401,344.63
  4. Step 4: Simplify right side
    673,251.43x = 372,833,049,219.71
  5. Step 5: Solve for x
    x = 372,833,049,219.71/673,251.43
  6. Step 6: Final answer
    x = 553,779.81

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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.