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Finding the Fourth Proportional to 978,178.80, 1,467,268.20 and 604,412.40

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Solution

The fourth proportional to 978,178.80, 1,467,268.20 and 604,412.40 is: 906,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,178.80 : 1,467,268.20 = 604,412.40 : x
  2. Step 2: Convert to fraction form
    978,178.80/1,467,268.20 = 604,412.40/x
  3. Step 3: Cross multiply
    978,178.80x = 1,467,268.20 × 604,412.40
  4. Step 4: Simplify right side
    978,178.80x = 886,835,094,205.68
  5. Step 5: Solve for x
    x = 886,835,094,205.68/978,178.80
  6. Step 6: Final answer
    x = 906,618.60

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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.