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Finding the Fourth Proportional to 978,239.70, 1,467,359.55 and 842,937.30

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Solution

The fourth proportional to 978,239.70, 1,467,359.55 and 842,937.30 is: 1,264,405.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,239.70 : 1,467,359.55 = 842,937.30 : x
  2. Step 2: Convert to fraction form
    978,239.70/1,467,359.55 = 842,937.30/x
  3. Step 3: Cross multiply
    978,239.70x = 1,467,359.55 × 842,937.30
  4. Step 4: Simplify right side
    978,239.70x = 1,236,892,097,206.22
  5. Step 5: Solve for x
    x = 1,236,892,097,206.22/978,239.70
  6. Step 6: Final answer
    x = 1,264,405.95

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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.