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Finding the Fourth Proportional to 616,052.90, 923,860.65 and 426,512.90

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Solution

The fourth proportional to 616,052.90, 923,860.65 and 426,512.90 is: 639,617.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,052.90 : 923,860.65 = 426,512.90 : x
  2. Step 2: Convert to fraction form
    616,052.90/923,860.65 = 426,512.90/x
  3. Step 3: Cross multiply
    616,052.90x = 923,860.65 × 426,512.90
  4. Step 4: Simplify right side
    616,052.90x = 394,038,485,027.39
  5. Step 5: Solve for x
    x = 394,038,485,027.39/616,052.90
  6. Step 6: Final answer
    x = 639,617.94

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1.5x scale

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.