Home / 442,861,711.40-664,292,567.10-212,775,314.60

Finding the Fourth Proportional to 442,861,711.40, 664,292,567.10 and 212,775,314.60

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Solution

The fourth proportional to 442,861,711.40, 664,292,567.10 and 212,775,314.60 is: 319,162,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,861,711.40 : 664,292,567.10 = 212,775,314.60 : x
  2. Step 2: Convert to fraction form
    442,861,711.40/664,292,567.10 = 212,775,314.60/x
  3. Step 3: Cross multiply
    442,861,711.40x = 664,292,567.10 × 212,775,314.60
  4. Step 4: Simplify right side
    442,861,711.40x = 141,345,059,951,144,112
  5. Step 5: Solve for x
    x = 141,345,059,951,144,112/442,861,711.40
  6. Step 6: Final answer
    x = 319,162,971.90

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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.