Home / 775,143.84-1,069,691.76-435,611.28

Finding the Fourth Proportional to 775,143.84, 1,069,691.76 and 435,611.28

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Solution

The fourth proportional to 775,143.84, 1,069,691.76 and 435,611.28 is: 601,139.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,143.84 : 1,069,691.76 = 435,611.28 : x
  2. Step 2: Convert to fraction form
    775,143.84/1,069,691.76 = 435,611.28/x
  3. Step 3: Cross multiply
    775,143.84x = 1,069,691.76 × 435,611.28
  4. Step 4: Simplify right side
    775,143.84x = 465,969,796,779.05
  5. Step 5: Solve for x
    x = 465,969,796,779.05/775,143.84
  6. Step 6: Final answer
    x = 601,139.78

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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.