Home / 1,288,663.29-1,778,377.38-707,910.90

Finding the Fourth Proportional to 1,288,663.29, 1,778,377.38 and 707,910.90

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Solution

The fourth proportional to 1,288,663.29, 1,778,377.38 and 707,910.90 is: 976,929.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,663.29 : 1,778,377.38 = 707,910.90 : x
  2. Step 2: Convert to fraction form
    1,288,663.29/1,778,377.38 = 707,910.90/x
  3. Step 3: Cross multiply
    1,288,663.29x = 1,778,377.38 × 707,910.90
  4. Step 4: Simplify right side
    1,288,663.29x = 1,258,932,731,615.44
  5. Step 5: Solve for x
    x = 1,258,932,731,615.44/1,288,663.29
  6. Step 6: Final answer
    x = 976,929.15

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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.