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Finding the Fourth Proportional to 978,212.80, 1,467,319.20 and 604,446.40

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Solution

The fourth proportional to 978,212.80, 1,467,319.20 and 604,446.40 is: 906,669.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,212.80 : 1,467,319.20 = 604,446.40 : x
  2. Step 2: Convert to fraction form
    978,212.80/1,467,319.20 = 604,446.40/x
  3. Step 3: Cross multiply
    978,212.80x = 1,467,319.20 × 604,446.40
  4. Step 4: Simplify right side
    978,212.80x = 886,915,808,090.88
  5. Step 5: Solve for x
    x = 886,915,808,090.88/978,212.80
  6. Step 6: Final answer
    x = 906,669.60

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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.