Home / 1,030,417.11-1,421,044.79-643,268.30

Finding the Fourth Proportional to 1,030,417.11, 1,421,044.79 and 643,268.30

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Solution

The fourth proportional to 1,030,417.11, 1,421,044.79 and 643,268.30 is: 887,129.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030,417.11 : 1,421,044.79 = 643,268.30 : x
  2. Step 2: Convert to fraction form
    1,030,417.11/1,421,044.79 = 643,268.30/x
  3. Step 3: Cross multiply
    1,030,417.11x = 1,421,044.79 × 643,268.30
  4. Step 4: Simplify right side
    1,030,417.11x = 914,113,055,965.59
  5. Step 5: Solve for x
    x = 914,113,055,965.59/1,030,417.11
  6. Step 6: Final answer
    x = 887,129.15

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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.