Home / 1,265,535,917.82-1,897,610,328.54-391,894,743.24

Finding the Fourth Proportional to 1,265,535,917.82, 1,897,610,328.54 and 391,894,743.24

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Solution

The fourth proportional to 1,265,535,917.82, 1,897,610,328.54 and 391,894,743.24 is: 587,627,345.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,535,917.82 : 1,897,610,328.54 = 391,894,743.24 : x
  2. Step 2: Convert to fraction form
    1,265,535,917.82/1,897,610,328.54 = 391,894,743.24/x
  3. Step 3: Cross multiply
    1,265,535,917.82x = 1,897,610,328.54 × 391,894,743.24
  4. Step 4: Simplify right side
    1,265,535,917.82x = 743,663,512,472,755,328
  5. Step 5: Solve for x
    x = 743,663,512,472,755,328/1,265,535,917.82
  6. Step 6: Final answer
    x = 587,627,345.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.