Home / 664,010,848.80-996,299,708.40-318,786,775.20

Finding the Fourth Proportional to 664,010,848.80, 996,299,708.40 and 318,786,775.20

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Solution

The fourth proportional to 664,010,848.80, 996,299,708.40 and 318,786,775.20 is: 478,316,237.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,010,848.80 : 996,299,708.40 = 318,786,775.20 : x
  2. Step 2: Convert to fraction form
    664,010,848.80/996,299,708.40 = 318,786,775.20/x
  3. Step 3: Cross multiply
    664,010,848.80x = 996,299,708.40 × 318,786,775.20
  4. Step 4: Simplify right side
    664,010,848.80x = 317,607,171,173,536,320
  5. Step 5: Solve for x
    x = 317,607,171,173,536,320/664,010,848.80
  6. Step 6: Final answer
    x = 478,316,237.98

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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.