Home / 659,819.40-989,297.10-260,219.40

Finding the Fourth Proportional to 659,819.40, 989,297.10 and 260,219.40

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Solution

The fourth proportional to 659,819.40, 989,297.10 and 260,219.40 is: 390,158.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,819.40 : 989,297.10 = 260,219.40 : x
  2. Step 2: Convert to fraction form
    659,819.40/989,297.10 = 260,219.40/x
  3. Step 3: Cross multiply
    659,819.40x = 989,297.10 × 260,219.40
  4. Step 4: Simplify right side
    659,819.40x = 257,434,297,783.74
  5. Step 5: Solve for x
    x = 257,434,297,783.74/659,819.40
  6. Step 6: Final answer
    x = 390,158.73

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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.