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Finding the Fourth Proportional to 437,864.80, 655,414.80 and 424,040.80

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Solution

The fourth proportional to 437,864.80, 655,414.80 and 424,040.80 is: 634,722.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,864.80 : 655,414.80 = 424,040.80 : x
  2. Step 2: Convert to fraction form
    437,864.80/655,414.80 = 424,040.80/x
  3. Step 3: Cross multiply
    437,864.80x = 655,414.80 × 424,040.80
  4. Step 4: Simplify right side
    437,864.80x = 277,922,616,123.84
  5. Step 5: Solve for x
    x = 277,922,616,123.84/437,864.80
  6. Step 6: Final answer
    x = 634,722.44

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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.