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Finding the Fourth Proportional to 978,353.80, 1,467,530.70 and 845,384.20

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Solution

The fourth proportional to 978,353.80, 1,467,530.70 and 845,384.20 is: 1,268,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,353.80 : 1,467,530.70 = 845,384.20 : x
  2. Step 2: Convert to fraction form
    978,353.80/1,467,530.70 = 845,384.20/x
  3. Step 3: Cross multiply
    978,353.80x = 1,467,530.70 × 845,384.20
  4. Step 4: Simplify right side
    978,353.80x = 1,240,627,266,794.94
  5. Step 5: Solve for x
    x = 1,240,627,266,794.94/978,353.80
  6. Step 6: Final answer
    x = 1,268,076.30

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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.