Home / 1,065,322.80-1,595,910.60-643,345.20

Finding the Fourth Proportional to 1,065,322.80, 1,595,910.60 and 643,345.20

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Solution

The fourth proportional to 1,065,322.80, 1,595,910.60 and 643,345.20 is: 963,765.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065,322.80 : 1,595,910.60 = 643,345.20 : x
  2. Step 2: Convert to fraction form
    1,065,322.80/1,595,910.60 = 643,345.20/x
  3. Step 3: Cross multiply
    1,065,322.80x = 1,595,910.60 × 643,345.20
  4. Step 4: Simplify right side
    1,065,322.80x = 1,026,721,424,139.12
  5. Step 5: Solve for x
    x = 1,026,721,424,139.12/1,065,322.80
  6. Step 6: Final answer
    x = 963,765.56

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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.