Home / 512,449,487.20-768,674,230.80-488,640,930.40

Finding the Fourth Proportional to 512,449,487.20, 768,674,230.80 and 488,640,930.40

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Solution

The fourth proportional to 512,449,487.20, 768,674,230.80 and 488,640,930.40 is: 732,961,395.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,449,487.20 : 768,674,230.80 = 488,640,930.40 : x
  2. Step 2: Convert to fraction form
    512,449,487.20/768,674,230.80 = 488,640,930.40/x
  3. Step 3: Cross multiply
    512,449,487.20x = 768,674,230.80 × 488,640,930.40
  4. Step 4: Simplify right side
    512,449,487.20x = 375,605,691,312,616,320
  5. Step 5: Solve for x
    x = 375,605,691,312,616,320/512,449,487.20
  6. Step 6: Final answer
    x = 732,961,395.60

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1.5x scale

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.