Home / 679,008,257.60-1,018,512,465.30-212,706,018.70

Finding the Fourth Proportional to 679,008,257.60, 1,018,512,465.30 and 212,706,018.70

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Solution

The fourth proportional to 679,008,257.60, 1,018,512,465.30 and 212,706,018.70 is: 319,059,052.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,008,257.60 : 1,018,512,465.30 = 212,706,018.70 : x
  2. Step 2: Convert to fraction form
    679,008,257.60/1,018,512,465.30 = 212,706,018.70/x
  3. Step 3: Cross multiply
    679,008,257.60x = 1,018,512,465.30 × 212,706,018.70
  4. Step 4: Simplify right side
    679,008,257.60x = 216,643,731,487,738,592
  5. Step 5: Solve for x
    x = 216,643,731,487,738,592/679,008,257.60
  6. Step 6: Final answer
    x = 319,059,052.76

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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.