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Finding the Fourth Proportional to 440,003.40, 660,005.10 and 290,412.60

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Solution

The fourth proportional to 440,003.40, 660,005.10 and 290,412.60 is: 435,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,003.40 : 660,005.10 = 290,412.60 : x
  2. Step 2: Convert to fraction form
    440,003.40/660,005.10 = 290,412.60/x
  3. Step 3: Cross multiply
    440,003.40x = 660,005.10 × 290,412.60
  4. Step 4: Simplify right side
    440,003.40x = 191,673,797,104.26
  5. Step 5: Solve for x
    x = 191,673,797,104.26/440,003.40
  6. Step 6: Final answer
    x = 435,618.90

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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.