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Finding the Fourth Proportional to 520,970.40, 718,249.96 and 375,654.60

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Solution

The fourth proportional to 520,970.40, 718,249.96 and 375,654.60 is: 517,906.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,970.40 : 718,249.96 = 375,654.60 : x
  2. Step 2: Convert to fraction form
    520,970.40/718,249.96 = 375,654.60/x
  3. Step 3: Cross multiply
    520,970.40x = 718,249.96 × 375,654.60
  4. Step 4: Simplify right side
    520,970.40x = 269,813,901,423.82
  5. Step 5: Solve for x
    x = 269,813,901,423.82/520,970.40
  6. Step 6: Final answer
    x = 517,906.39

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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.