Home / 1,029,663.72-1,421,627.94-643,066.92

Finding the Fourth Proportional to 1,029,663.72, 1,421,627.94 and 643,066.92

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Solution

The fourth proportional to 1,029,663.72, 1,421,627.94 and 643,066.92 is: 887,864.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029,663.72 : 1,421,627.94 = 643,066.92 : x
  2. Step 2: Convert to fraction form
    1,029,663.72/1,421,627.94 = 643,066.92/x
  3. Step 3: Cross multiply
    1,029,663.72x = 1,421,627.94 × 643,066.92
  4. Step 4: Simplify right side
    1,029,663.72x = 914,201,900,761.75
  5. Step 5: Solve for x
    x = 914,201,900,761.75/1,029,663.72
  6. Step 6: Final answer
    x = 887,864.54

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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.