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Finding the Fourth Proportional to 628,218.48, 866,944.08 and 341,740.20

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Solution

The fourth proportional to 628,218.48, 866,944.08 and 341,740.20 is: 471,602.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,218.48 : 866,944.08 = 341,740.20 : x
  2. Step 2: Convert to fraction form
    628,218.48/866,944.08 = 341,740.20/x
  3. Step 3: Cross multiply
    628,218.48x = 866,944.08 × 341,740.20
  4. Step 4: Simplify right side
    628,218.48x = 296,269,643,288.02
  5. Step 5: Solve for x
    x = 296,269,643,288.02/628,218.48
  6. Step 6: Final answer
    x = 471,602.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.