Home / 442,959,620.40-664,439,430.60-212,873,223.60

Finding the Fourth Proportional to 442,959,620.40, 664,439,430.60 and 212,873,223.60

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Solution

The fourth proportional to 442,959,620.40, 664,439,430.60 and 212,873,223.60 is: 319,309,835.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,959,620.40 : 664,439,430.60 = 212,873,223.60 : x
  2. Step 2: Convert to fraction form
    442,959,620.40/664,439,430.60 = 212,873,223.60/x
  3. Step 3: Cross multiply
    442,959,620.40x = 664,439,430.60 × 212,873,223.60
  4. Step 4: Simplify right side
    442,959,620.40x = 141,441,363,478,770,480
  5. Step 5: Solve for x
    x = 141,441,363,478,770,480/442,959,620.40
  6. Step 6: Final answer
    x = 319,309,835.40

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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.