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Finding the Fourth Proportional to 653,710.49, 901,861.05 and 378,017.39

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Solution

The fourth proportional to 653,710.49, 901,861.05 and 378,017.39 is: 521,513.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,710.49 : 901,861.05 = 378,017.39 : x
  2. Step 2: Convert to fraction form
    653,710.49/901,861.05 = 378,017.39/x
  3. Step 3: Cross multiply
    653,710.49x = 901,861.05 × 378,017.39
  4. Step 4: Simplify right side
    653,710.49x = 340,919,155,754.35
  5. Step 5: Solve for x
    x = 340,919,155,754.35/653,710.49
  6. Step 6: Final answer
    x = 521,513.98

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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.