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Finding the Fourth Proportional to 396,607,077.60, 595,005,094.80 and 191,966,863.20

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Solution

The fourth proportional to 396,607,077.60, 595,005,094.80 and 191,966,863.20 is: 287,996,024.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,607,077.60 : 595,005,094.80 = 191,966,863.20 : x
  2. Step 2: Convert to fraction form
    396,607,077.60/595,005,094.80 = 191,966,863.20/x
  3. Step 3: Cross multiply
    396,607,077.60x = 595,005,094.80 × 191,966,863.20
  4. Step 4: Simplify right side
    396,607,077.60x = 114,221,261,636,774,608
  5. Step 5: Solve for x
    x = 114,221,261,636,774,608/396,607,077.60
  6. Step 6: Final answer
    x = 287,996,024.50

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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.