Home / 838,651,307.60-1,257,965,151.60-378,588,738.80

Finding the Fourth Proportional to 838,651,307.60, 1,257,965,151.60 and 378,588,738.80

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Solution

The fourth proportional to 838,651,307.60, 1,257,965,151.60 and 378,588,738.80 is: 567,877,776.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,651,307.60 : 1,257,965,151.60 = 378,588,738.80 : x
  2. Step 2: Convert to fraction form
    838,651,307.60/1,257,965,151.60 = 378,588,738.80/x
  3. Step 3: Cross multiply
    838,651,307.60x = 1,257,965,151.60 × 378,588,738.80
  4. Step 4: Simplify right side
    838,651,307.60x = 476,251,440,198,594,752
  5. Step 5: Solve for x
    x = 476,251,440,198,594,752/838,651,307.60
  6. Step 6: Final answer
    x = 567,877,776.95

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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.