Home / 753,148.89-1,129,732.47-220,680.72

Finding the Fourth Proportional to 753,148.89, 1,129,732.47 and 220,680.72

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Solution

The fourth proportional to 753,148.89, 1,129,732.47 and 220,680.72 is: 331,023.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,148.89 : 1,129,732.47 = 220,680.72 : x
  2. Step 2: Convert to fraction form
    753,148.89/1,129,732.47 = 220,680.72/x
  3. Step 3: Cross multiply
    753,148.89x = 1,129,732.47 × 220,680.72
  4. Step 4: Simplify right side
    753,148.89x = 249,310,174,886.98
  5. Step 5: Solve for x
    x = 249,310,174,886.98/753,148.89
  6. Step 6: Final answer
    x = 331,023.76

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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.