Home / 672,945,808.80-1,009,513,191.60-212,836,000.80

Finding the Fourth Proportional to 672,945,808.80, 1,009,513,191.60 and 212,836,000.80

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Solution

The fourth proportional to 672,945,808.80, 1,009,513,191.60 and 212,836,000.80 is: 319,283,882.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,945,808.80 : 1,009,513,191.60 = 212,836,000.80 : x
  2. Step 2: Convert to fraction form
    672,945,808.80/1,009,513,191.60 = 212,836,000.80/x
  3. Step 3: Cross multiply
    672,945,808.80x = 1,009,513,191.60 × 212,836,000.80
  4. Step 4: Simplify right side
    672,945,808.80x = 214,860,750,454,988,160
  5. Step 5: Solve for x
    x = 214,860,750,454,988,160/672,945,808.80
  6. Step 6: Final answer
    x = 319,283,882.37

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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.