Home / 1,421,175.24-1,961,139.20-776,600.73

Finding the Fourth Proportional to 1,421,175.24, 1,961,139.20 and 776,600.73

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Solution

The fourth proportional to 1,421,175.24, 1,961,139.20 and 776,600.73 is: 1,071,663.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,175.24 : 1,961,139.20 = 776,600.73 : x
  2. Step 2: Convert to fraction form
    1,421,175.24/1,961,139.20 = 776,600.73/x
  3. Step 3: Cross multiply
    1,421,175.24x = 1,961,139.20 × 776,600.73
  4. Step 4: Simplify right side
    1,421,175.24x = 1,523,022,130,468.61
  5. Step 5: Solve for x
    x = 1,523,022,130,468.61/1,421,175.24
  6. Step 6: Final answer
    x = 1,071,663.85

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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.