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Finding the Fourth Proportional to 978,277.60, 1,467,416.40 and 694,842.40

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Solution

The fourth proportional to 978,277.60, 1,467,416.40 and 694,842.40 is: 1,042,263.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,277.60 : 1,467,416.40 = 694,842.40 : x
  2. Step 2: Convert to fraction form
    978,277.60/1,467,416.40 = 694,842.40/x
  3. Step 3: Cross multiply
    978,277.60x = 1,467,416.40 × 694,842.40
  4. Step 4: Simplify right side
    978,277.60x = 1,019,623,133,175.36
  5. Step 5: Solve for x
    x = 1,019,623,133,175.36/978,277.60
  6. Step 6: Final answer
    x = 1,042,263.60

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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.