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Finding the Fourth Proportional to 603,991.80, 905,987.70 and 229,966.20

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Solution

The fourth proportional to 603,991.80, 905,987.70 and 229,966.20 is: 344,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,991.80 : 905,987.70 = 229,966.20 : x
  2. Step 2: Convert to fraction form
    603,991.80/905,987.70 = 229,966.20/x
  3. Step 3: Cross multiply
    603,991.80x = 905,987.70 × 229,966.20
  4. Step 4: Simplify right side
    603,991.80x = 208,346,548,615.74
  5. Step 5: Solve for x
    x = 208,346,548,615.74/603,991.80
  6. Step 6: Final answer
    x = 344,949.30

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Half scale
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Double scale
Find fourth proportional to 603,992.80, 905,989.20 and 229,967.20
Similar ratio
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1.5x scale

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.