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Finding the Fourth Proportional to 603,980.20, 905,970.30 and 324,044.20

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Solution

The fourth proportional to 603,980.20, 905,970.30 and 324,044.20 is: 486,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,980.20 : 905,970.30 = 324,044.20 : x
  2. Step 2: Convert to fraction form
    603,980.20/905,970.30 = 324,044.20/x
  3. Step 3: Cross multiply
    603,980.20x = 905,970.30 × 324,044.20
  4. Step 4: Simplify right side
    603,980.20x = 293,574,421,087.26
  5. Step 5: Solve for x
    x = 293,574,421,087.26/603,980.20
  6. Step 6: Final answer
    x = 486,066.30

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Half scale
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Double scale
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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.