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Finding the Fourth Proportional to 978,889.60, 1,468,334.40 and 314,108.80

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Solution

The fourth proportional to 978,889.60, 1,468,334.40 and 314,108.80 is: 471,163.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,889.60 : 1,468,334.40 = 314,108.80 : x
  2. Step 2: Convert to fraction form
    978,889.60/1,468,334.40 = 314,108.80/x
  3. Step 3: Cross multiply
    978,889.60x = 1,468,334.40 × 314,108.80
  4. Step 4: Simplify right side
    978,889.60x = 461,216,756,382.72
  5. Step 5: Solve for x
    x = 461,216,756,382.72/978,889.60
  6. Step 6: Final answer
    x = 471,163.20

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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.