Home / 2,115,931.81-3,172,897.32-819,691.34

Finding the Fourth Proportional to 2,115,931.81, 3,172,897.32 and 819,691.34

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Solution

The fourth proportional to 2,115,931.81, 3,172,897.32 and 819,691.34 is: 1,229,149.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,931.81 : 3,172,897.32 = 819,691.34 : x
  2. Step 2: Convert to fraction form
    2,115,931.81/3,172,897.32 = 819,691.34/x
  3. Step 3: Cross multiply
    2,115,931.81x = 3,172,897.32 × 819,691.34
  4. Step 4: Simplify right side
    2,115,931.81x = 2,600,796,455,913.21
  5. Step 5: Solve for x
    x = 2,600,796,455,913.21/2,115,931.81
  6. Step 6: Final answer
    x = 1,229,149.47

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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.