Home / 489,631.48-733,757.88-389,346.20

Finding the Fourth Proportional to 489,631.48, 733,757.88 and 389,346.20

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Solution

The fourth proportional to 489,631.48, 733,757.88 and 389,346.20 is: 583,471.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,631.48 : 733,757.88 = 389,346.20 : x
  2. Step 2: Convert to fraction form
    489,631.48/733,757.88 = 389,346.20/x
  3. Step 3: Cross multiply
    489,631.48x = 733,757.88 × 389,346.20
  4. Step 4: Simplify right side
    489,631.48x = 285,685,842,298.06
  5. Step 5: Solve for x
    x = 285,685,842,298.06/489,631.48
  6. Step 6: Final answer
    x = 583,471.15

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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.