Home / 318,986,384-478,479,575.46-76,649,288

Finding the Fourth Proportional to 318,986,384, 478,479,575.46 and 76,649,288

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Solution

The fourth proportional to 318,986,384, 478,479,575.46 and 76,649,288 is: 114,973,931.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,986,384 : 478,479,575.46 = 76,649,288 : x
  2. Step 2: Convert to fraction form
    318,986,384/478,479,575.46 = 76,649,288/x
  3. Step 3: Cross multiply
    318,986,384x = 478,479,575.46 × 76,649,288
  4. Step 4: Simplify right side
    318,986,384x = 36,675,118,781,551,272
  5. Step 5: Solve for x
    x = 36,675,118,781,551,272/318,986,384
  6. Step 6: Final answer
    x = 114,973,931.87

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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.