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Finding the Fourth Proportional to 803,976,250.40, 1,205,964,375.60 and 319,302,058.40

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Solution

The fourth proportional to 803,976,250.40, 1,205,964,375.60 and 319,302,058.40 is: 478,953,087.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,976,250.40 : 1,205,964,375.60 = 319,302,058.40 : x
  2. Step 2: Convert to fraction form
    803,976,250.40/1,205,964,375.60 = 319,302,058.40/x
  3. Step 3: Cross multiply
    803,976,250.40x = 1,205,964,375.60 × 319,302,058.40
  4. Step 4: Simplify right side
    803,976,250.40x = 385,066,907,486,150,656
  5. Step 5: Solve for x
    x = 385,066,907,486,150,656/803,976,250.40
  6. Step 6: Final answer
    x = 478,953,087.60

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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.