Home / 772,419,063.60-1,158,628,595.40-287,644,561.20

Finding the Fourth Proportional to 772,419,063.60, 1,158,628,595.40 and 287,644,561.20

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Solution

The fourth proportional to 772,419,063.60, 1,158,628,595.40 and 287,644,561.20 is: 431,466,841.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,419,063.60 : 1,158,628,595.40 = 287,644,561.20 : x
  2. Step 2: Convert to fraction form
    772,419,063.60/1,158,628,595.40 = 287,644,561.20/x
  3. Step 3: Cross multiply
    772,419,063.60x = 1,158,628,595.40 × 287,644,561.20
  4. Step 4: Simplify right side
    772,419,063.60x = 333,273,213,917,605,376
  5. Step 5: Solve for x
    x = 333,273,213,917,605,376/772,419,063.60
  6. Step 6: Final answer
    x = 431,466,841.80

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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.