Home / 643,269.75-887,131.08-401,574.66

Finding the Fourth Proportional to 643,269.75, 887,131.08 and 401,574.66

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Solution

The fourth proportional to 643,269.75, 887,131.08 and 401,574.66 is: 553,810.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,269.75 : 887,131.08 = 401,574.66 : x
  2. Step 2: Convert to fraction form
    643,269.75/887,131.08 = 401,574.66/x
  3. Step 3: Cross multiply
    643,269.75x = 887,131.08 × 401,574.66
  4. Step 4: Simplify right side
    643,269.75x = 356,249,361,826.43
  5. Step 5: Solve for x
    x = 356,249,361,826.43/643,269.75
  6. Step 6: Final answer
    x = 553,810.22

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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.