Home / 520,879,630.56-718,811,052.84-285,934,289.28

Finding the Fourth Proportional to 520,879,630.56, 718,811,052.84 and 285,934,289.28

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Solution

The fourth proportional to 520,879,630.56, 718,811,052.84 and 285,934,289.28 is: 394,587,761.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,879,630.56 : 718,811,052.84 = 285,934,289.28 : x
  2. Step 2: Convert to fraction form
    520,879,630.56/718,811,052.84 = 285,934,289.28/x
  3. Step 3: Cross multiply
    520,879,630.56x = 718,811,052.84 × 285,934,289.28
  4. Step 4: Simplify right side
    520,879,630.56x = 205,532,727,520,413,920
  5. Step 5: Solve for x
    x = 205,532,727,520,413,920/520,879,630.56
  6. Step 6: Final answer
    x = 394,587,761.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.