Home / 391,330.20-587,708.10-342,341.40

Finding the Fourth Proportional to 391,330.20, 587,708.10 and 342,341.40

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Solution

The fourth proportional to 391,330.20, 587,708.10 and 342,341.40 is: 514,135.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,330.20 : 587,708.10 = 342,341.40 : x
  2. Step 2: Convert to fraction form
    391,330.20/587,708.10 = 342,341.40/x
  3. Step 3: Cross multiply
    391,330.20x = 587,708.10 × 342,341.40
  4. Step 4: Simplify right side
    391,330.20x = 201,196,813,745.34
  5. Step 5: Solve for x
    x = 201,196,813,745.34/391,330.20
  6. Step 6: Final answer
    x = 514,135.67

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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.