Home / 3,129,031.05-4,694,895.35-1,689,428.76

Finding the Fourth Proportional to 3,129,031.05, 4,694,895.35 and 1,689,428.76

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Solution

The fourth proportional to 3,129,031.05, 4,694,895.35 and 1,689,428.76 is: 2,534,871.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129,031.05 : 4,694,895.35 = 1,689,428.76 : x
  2. Step 2: Convert to fraction form
    3,129,031.05/4,694,895.35 = 1,689,428.76/x
  3. Step 3: Cross multiply
    3,129,031.05x = 4,694,895.35 × 1,689,428.76
  4. Step 4: Simplify right side
    3,129,031.05x = 7,931,691,221,033.12
  5. Step 5: Solve for x
    x = 7,931,691,221,033.12/3,129,031.05
  6. Step 6: Final answer
    x = 2,534,871.37

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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.