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Finding the Fourth Proportional to 978,063.60, 1,467,095.40 and 417,154.80

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Solution

The fourth proportional to 978,063.60, 1,467,095.40 and 417,154.80 is: 625,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,063.60 : 1,467,095.40 = 417,154.80 : x
  2. Step 2: Convert to fraction form
    978,063.60/1,467,095.40 = 417,154.80/x
  3. Step 3: Cross multiply
    978,063.60x = 1,467,095.40 × 417,154.80
  4. Step 4: Simplify right side
    978,063.60x = 612,005,888,167.92
  5. Step 5: Solve for x
    x = 612,005,888,167.92/978,063.60
  6. Step 6: Final answer
    x = 625,732.20

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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.