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Finding the Fourth Proportional to 657,003.40, 985,274.70 and 341,355.40

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Solution

The fourth proportional to 657,003.40, 985,274.70 and 341,355.40 is: 511,913.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,003.40 : 985,274.70 = 341,355.40 : x
  2. Step 2: Convert to fraction form
    657,003.40/985,274.70 = 341,355.40/x
  3. Step 3: Cross multiply
    657,003.40x = 985,274.70 × 341,355.40
  4. Step 4: Simplify right side
    657,003.40x = 336,328,839,328.38
  5. Step 5: Solve for x
    x = 336,328,839,328.38/657,003.40
  6. Step 6: Final answer
    x = 511,913.39

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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.