Home / 402,408,056.20-603,612,084.30-345,012,428.20

Finding the Fourth Proportional to 402,408,056.20, 603,612,084.30 and 345,012,428.20

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Solution

The fourth proportional to 402,408,056.20, 603,612,084.30 and 345,012,428.20 is: 517,518,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,056.20 : 603,612,084.30 = 345,012,428.20 : x
  2. Step 2: Convert to fraction form
    402,408,056.20/603,612,084.30 = 345,012,428.20/x
  3. Step 3: Cross multiply
    402,408,056.20x = 603,612,084.30 × 345,012,428.20
  4. Step 4: Simplify right side
    402,408,056.20x = 208,253,670,895,206,080
  5. Step 5: Solve for x
    x = 208,253,670,895,206,080/402,408,056.20
  6. Step 6: Final answer
    x = 517,518,642.30

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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.