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Finding the Fourth Proportional to 424,072.40, 636,108.60 and 403,336.40

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Solution

The fourth proportional to 424,072.40, 636,108.60 and 403,336.40 is: 605,004.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,072.40 : 636,108.60 = 403,336.40 : x
  2. Step 2: Convert to fraction form
    424,072.40/636,108.60 = 403,336.40/x
  3. Step 3: Cross multiply
    424,072.40x = 636,108.60 × 403,336.40
  4. Step 4: Simplify right side
    424,072.40x = 256,565,752,733.04
  5. Step 5: Solve for x
    x = 256,565,752,733.04/424,072.40
  6. Step 6: Final answer
    x = 605,004.60

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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.