Home / 643,272.76-887,135.22-401,577.66

Finding the Fourth Proportional to 643,272.76, 887,135.22 and 401,577.66

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Solution

The fourth proportional to 643,272.76, 887,135.22 and 401,577.66 is: 553,814.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,272.76 : 887,135.22 = 401,577.66 : x
  2. Step 2: Convert to fraction form
    643,272.76/887,135.22 = 401,577.66/x
  3. Step 3: Cross multiply
    643,272.76x = 887,135.22 × 401,577.66
  4. Step 4: Simplify right side
    643,272.76x = 356,253,685,751.19
  5. Step 5: Solve for x
    x = 356,253,685,751.19/643,272.76
  6. Step 6: Final answer
    x = 553,814.35

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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.