Home / 1,051,951.51-1,451,351.28-643,627.68

Finding the Fourth Proportional to 1,051,951.51, 1,451,351.28 and 643,627.68

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Solution

The fourth proportional to 1,051,951.51, 1,451,351.28 and 643,627.68 is: 887,997.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051,951.51 : 1,451,351.28 = 643,627.68 : x
  2. Step 2: Convert to fraction form
    1,051,951.51/1,451,351.28 = 643,627.68/x
  3. Step 3: Cross multiply
    1,051,951.51x = 1,451,351.28 × 643,627.68
  4. Step 4: Simplify right side
    1,051,951.51x = 934,129,857,211.43
  5. Step 5: Solve for x
    x = 934,129,857,211.43/1,051,951.51
  6. Step 6: Final answer
    x = 887,997.07

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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.