Home / 402,408,107.20-603,612,160.80-345,012,479.20

Finding the Fourth Proportional to 402,408,107.20, 603,612,160.80 and 345,012,479.20

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Solution

The fourth proportional to 402,408,107.20, 603,612,160.80 and 345,012,479.20 is: 517,518,718.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,107.20 : 603,612,160.80 = 345,012,479.20 : x
  2. Step 2: Convert to fraction form
    402,408,107.20/603,612,160.80 = 345,012,479.20/x
  3. Step 3: Cross multiply
    402,408,107.20x = 603,612,160.80 × 345,012,479.20
  4. Step 4: Simplify right side
    402,408,107.20x = 208,253,728,072,877,024
  5. Step 5: Solve for x
    x = 208,253,728,072,877,024/402,408,107.20
  6. Step 6: Final answer
    x = 517,518,718.80

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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.