Home / 442,956,039.90-664,434,059.85-212,869,643.10

Finding the Fourth Proportional to 442,956,039.90, 664,434,059.85 and 212,869,643.10

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Solution

The fourth proportional to 442,956,039.90, 664,434,059.85 and 212,869,643.10 is: 319,304,464.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,956,039.90 : 664,434,059.85 = 212,869,643.10 : x
  2. Step 2: Convert to fraction form
    442,956,039.90/664,434,059.85 = 212,869,643.10/x
  3. Step 3: Cross multiply
    442,956,039.90x = 664,434,059.85 × 212,869,643.10
  4. Step 4: Simplify right side
    442,956,039.90x = 141,437,841,183,753,536
  5. Step 5: Solve for x
    x = 141,437,841,183,753,536/442,956,039.90
  6. Step 6: Final answer
    x = 319,304,464.65

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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.