Home / 1,030,418.11-1,421,046.16-643,269.30

Finding the Fourth Proportional to 1,030,418.11, 1,421,046.16 and 643,269.30

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Solution

The fourth proportional to 1,030,418.11, 1,421,046.16 and 643,269.30 is: 887,130.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030,418.11 : 1,421,046.16 = 643,269.30 : x
  2. Step 2: Convert to fraction form
    1,030,418.11/1,421,046.16 = 643,269.30/x
  3. Step 3: Cross multiply
    1,030,418.11x = 1,421,046.16 × 643,269.30
  4. Step 4: Simplify right side
    1,030,418.11x = 914,115,368,610.89
  5. Step 5: Solve for x
    x = 914,115,368,610.89/1,030,418.11
  6. Step 6: Final answer
    x = 887,130.53

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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.