Home / 442,872,830.90-664,309,246.35-212,786,434.10

Finding the Fourth Proportional to 442,872,830.90, 664,309,246.35 and 212,786,434.10

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Solution

The fourth proportional to 442,872,830.90, 664,309,246.35 and 212,786,434.10 is: 319,179,651.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,872,830.90 : 664,309,246.35 = 212,786,434.10 : x
  2. Step 2: Convert to fraction form
    442,872,830.90/664,309,246.35 = 212,786,434.10/x
  3. Step 3: Cross multiply
    442,872,830.90x = 664,309,246.35 × 212,786,434.10
  4. Step 4: Simplify right side
    442,872,830.90x = 141,355,995,670,474,944
  5. Step 5: Solve for x
    x = 141,355,995,670,474,944/442,872,830.90
  6. Step 6: Final answer
    x = 319,179,651.15

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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.