Home / 279,936,378.40-419,904,567.60-262,020,474.40

Finding the Fourth Proportional to 279,936,378.40, 419,904,567.60 and 262,020,474.40

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Solution

The fourth proportional to 279,936,378.40, 419,904,567.60 and 262,020,474.40 is: 393,030,711.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,378.40 : 419,904,567.60 = 262,020,474.40 : x
  2. Step 2: Convert to fraction form
    279,936,378.40/419,904,567.60 = 262,020,474.40/x
  3. Step 3: Cross multiply
    279,936,378.40x = 419,904,567.60 × 262,020,474.40
  4. Step 4: Simplify right side
    279,936,378.40x = 110,023,594,005,278,880
  5. Step 5: Solve for x
    x = 110,023,594,005,278,880/279,936,378.40
  6. Step 6: Final answer
    x = 393,030,711.60

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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.