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Finding the Fourth Proportional to 659,002.70, 909,617.07 and 383,425.40

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Solution

The fourth proportional to 659,002.70, 909,617.07 and 383,425.40 is: 529,239.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,002.70 : 909,617.07 = 383,425.40 : x
  2. Step 2: Convert to fraction form
    659,002.70/909,617.07 = 383,425.40/x
  3. Step 3: Cross multiply
    659,002.70x = 909,617.07 × 383,425.40
  4. Step 4: Simplify right side
    659,002.70x = 348,770,284,363.49
  5. Step 5: Solve for x
    x = 348,770,284,363.49/659,002.70
  6. Step 6: Final answer
    x = 529,239.54

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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.