Home / 402,408,052.20-603,612,078.30-208,697,807.70

Finding the Fourth Proportional to 402,408,052.20, 603,612,078.30 and 208,697,807.70

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Solution

The fourth proportional to 402,408,052.20, 603,612,078.30 and 208,697,807.70 is: 313,046,711.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,052.20 : 603,612,078.30 = 208,697,807.70 : x
  2. Step 2: Convert to fraction form
    402,408,052.20/603,612,078.30 = 208,697,807.70/x
  3. Step 3: Cross multiply
    402,408,052.20x = 603,612,078.30 × 208,697,807.70
  4. Step 4: Simplify right side
    402,408,052.20x = 125,972,517,442,450,720
  5. Step 5: Solve for x
    x = 125,972,517,442,450,720/402,408,052.20
  6. Step 6: Final answer
    x = 313,046,711.55

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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.