Home / 391,408,000.20-587,112,000.30-118,778,329.80

Finding the Fourth Proportional to 391,408,000.20, 587,112,000.30 and 118,778,329.80

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Solution

The fourth proportional to 391,408,000.20, 587,112,000.30 and 118,778,329.80 is: 178,167,494.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,408,000.20 : 587,112,000.30 = 118,778,329.80 : x
  2. Step 2: Convert to fraction form
    391,408,000.20/587,112,000.30 = 118,778,329.80/x
  3. Step 3: Cross multiply
    391,408,000.20x = 587,112,000.30 × 118,778,329.80
  4. Step 4: Simplify right side
    391,408,000.20x = 69,736,182,801,171,088
  5. Step 5: Solve for x
    x = 69,736,182,801,171,088/391,408,000.20
  6. Step 6: Final answer
    x = 178,167,494.70

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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.