Home / 1,030,378.83-1,420,992.01-643,229.98

Finding the Fourth Proportional to 1,030,378.83, 1,420,992.01 and 643,229.98

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Solution

The fourth proportional to 1,030,378.83, 1,420,992.01 and 643,229.98 is: 887,076.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030,378.83 : 1,420,992.01 = 643,229.98 : x
  2. Step 2: Convert to fraction form
    1,030,378.83/1,420,992.01 = 643,229.98/x
  3. Step 3: Cross multiply
    1,030,378.83x = 1,420,992.01 × 643,229.98
  4. Step 4: Simplify right side
    1,030,378.83x = 914,024,659,424.02
  5. Step 5: Solve for x
    x = 914,024,659,424.02/1,030,378.83
  6. Step 6: Final answer
    x = 887,076.32

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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.