Home / 513,113,032.24-769,591,781.52-139,650,020.74

Finding the Fourth Proportional to 513,113,032.24, 769,591,781.52 and 139,650,020.74

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Solution

The fourth proportional to 513,113,032.24, 769,591,781.52 and 139,650,020.74 is: 209,453,865.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,113,032.24 : 769,591,781.52 = 139,650,020.74 : x
  2. Step 2: Convert to fraction form
    513,113,032.24/769,591,781.52 = 139,650,020.74/x
  3. Step 3: Cross multiply
    513,113,032.24x = 769,591,781.52 × 139,650,020.74
  4. Step 4: Simplify right side
    513,113,032.24x = 107,473,508,250,601,552
  5. Step 5: Solve for x
    x = 107,473,508,250,601,552/513,113,032.24
  6. Step 6: Final answer
    x = 209,453,865.91

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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.