Home / 812,945,981.60-1,219,418,972.40-267,616,656.80

Finding the Fourth Proportional to 812,945,981.60, 1,219,418,972.40 and 267,616,656.80

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Solution

The fourth proportional to 812,945,981.60, 1,219,418,972.40 and 267,616,656.80 is: 401,424,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,945,981.60 : 1,219,418,972.40 = 267,616,656.80 : x
  2. Step 2: Convert to fraction form
    812,945,981.60/1,219,418,972.40 = 267,616,656.80/x
  3. Step 3: Cross multiply
    812,945,981.60x = 1,219,418,972.40 × 267,616,656.80
  4. Step 4: Simplify right side
    812,945,981.60x = 326,336,828,632,179,520
  5. Step 5: Solve for x
    x = 326,336,828,632,179,520/812,945,981.60
  6. Step 6: Final answer
    x = 401,424,985.20

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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.