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Finding the Fourth Proportional to 616,052.40, 923,859.90 and 426,512.40

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Solution

The fourth proportional to 616,052.40, 923,859.90 and 426,512.40 is: 639,617.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,052.40 : 923,859.90 = 426,512.40 : x
  2. Step 2: Convert to fraction form
    616,052.40/923,859.90 = 426,512.40/x
  3. Step 3: Cross multiply
    616,052.40x = 923,859.90 × 426,512.40
  4. Step 4: Simplify right side
    616,052.40x = 394,037,703,212.76
  5. Step 5: Solve for x
    x = 394,037,703,212.76/616,052.40
  6. Step 6: Final answer
    x = 639,617.19

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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.