Home / 1,287,449.91-1,930,408.47-434,311.67

Finding the Fourth Proportional to 1,287,449.91, 1,930,408.47 and 434,311.67

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Solution

The fourth proportional to 1,287,449.91, 1,930,408.47 and 434,311.67 is: 651,208.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,449.91 : 1,930,408.47 = 434,311.67 : x
  2. Step 2: Convert to fraction form
    1,287,449.91/1,930,408.47 = 434,311.67/x
  3. Step 3: Cross multiply
    1,287,449.91x = 1,930,408.47 × 434,311.67
  4. Step 4: Simplify right side
    1,287,449.91x = 838,398,931,213.87
  5. Step 5: Solve for x
    x = 838,398,931,213.87/1,287,449.91
  6. Step 6: Final answer
    x = 651,208.97

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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.