Home / 442,839,817.40-664,259,726.10-212,753,420.60

Finding the Fourth Proportional to 442,839,817.40, 664,259,726.10 and 212,753,420.60

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Solution

The fourth proportional to 442,839,817.40, 664,259,726.10 and 212,753,420.60 is: 319,130,130.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,839,817.40 : 664,259,726.10 = 212,753,420.60 : x
  2. Step 2: Convert to fraction form
    442,839,817.40/664,259,726.10 = 212,753,420.60/x
  3. Step 3: Cross multiply
    442,839,817.40x = 664,259,726.10 × 212,753,420.60
  4. Step 4: Simplify right side
    442,839,817.40x = 141,323,528,894,594,096
  5. Step 5: Solve for x
    x = 141,323,528,894,594,096/442,839,817.40
  6. Step 6: Final answer
    x = 319,130,130.90

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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.