Home / 442,872,425.40-664,308,638.10-212,786,028.60

Finding the Fourth Proportional to 442,872,425.40, 664,308,638.10 and 212,786,028.60

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Solution

The fourth proportional to 442,872,425.40, 664,308,638.10 and 212,786,028.60 is: 319,179,042.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,872,425.40 : 664,308,638.10 = 212,786,028.60 : x
  2. Step 2: Convert to fraction form
    442,872,425.40/664,308,638.10 = 212,786,028.60/x
  3. Step 3: Cross multiply
    442,872,425.40x = 664,308,638.10 × 212,786,028.60
  4. Step 4: Simplify right side
    442,872,425.40x = 141,355,596,865,973,648
  5. Step 5: Solve for x
    x = 141,355,596,865,973,648/442,872,425.40
  6. Step 6: Final answer
    x = 319,179,042.90

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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.