Home / 402,408,007.70-603,612,011.55-399,857,090.90

Finding the Fourth Proportional to 402,408,007.70, 603,612,011.55 and 399,857,090.90

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Solution

The fourth proportional to 402,408,007.70, 603,612,011.55 and 399,857,090.90 is: 599,785,636.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,007.70 : 603,612,011.55 = 399,857,090.90 : x
  2. Step 2: Convert to fraction form
    402,408,007.70/603,612,011.55 = 399,857,090.90/x
  3. Step 3: Cross multiply
    402,408,007.70x = 603,612,011.55 × 399,857,090.90
  4. Step 4: Simplify right side
    402,408,007.70x = 241,358,542,970,680,160
  5. Step 5: Solve for x
    x = 241,358,542,970,680,160/402,408,007.70
  6. Step 6: Final answer
    x = 599,785,636.35

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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.