Home / 1,288,663.55-1,778,377.71-707,911.17

Finding the Fourth Proportional to 1,288,663.55, 1,778,377.71 and 707,911.17

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Solution

The fourth proportional to 1,288,663.55, 1,778,377.71 and 707,911.17 is: 976,929.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,663.55 : 1,778,377.71 = 707,911.17 : x
  2. Step 2: Convert to fraction form
    1,288,663.55/1,778,377.71 = 707,911.17/x
  3. Step 3: Cross multiply
    1,288,663.55x = 1,778,377.71 × 707,911.17
  4. Step 4: Simplify right side
    1,288,663.55x = 1,258,933,445,388.02
  5. Step 5: Solve for x
    x = 1,258,933,445,388.02/1,288,663.55
  6. Step 6: Final answer
    x = 976,929.51

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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.