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Finding the Fourth Proportional to 615,887.80, 923,370.90 and 335,721.40

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Solution

The fourth proportional to 615,887.80, 923,370.90 and 335,721.40 is: 503,330.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,887.80 : 923,370.90 = 335,721.40 : x
  2. Step 2: Convert to fraction form
    615,887.80/923,370.90 = 335,721.40/x
  3. Step 3: Cross multiply
    615,887.80x = 923,370.90 × 335,721.40
  4. Step 4: Simplify right side
    615,887.80x = 309,995,371,267.26
  5. Step 5: Solve for x
    x = 309,995,371,267.26/615,887.80
  6. Step 6: Final answer
    x = 503,330.92

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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.