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Finding the Fourth Proportional to 424,383.84, 636,583.32 and 339,750.72

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Solution

The fourth proportional to 424,383.84, 636,583.32 and 339,750.72 is: 509,632.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,383.84 : 636,583.32 = 339,750.72 : x
  2. Step 2: Convert to fraction form
    424,383.84/636,583.32 = 339,750.72/x
  3. Step 3: Cross multiply
    424,383.84x = 636,583.32 × 339,750.72
  4. Step 4: Simplify right side
    424,383.84x = 216,279,641,309.99
  5. Step 5: Solve for x
    x = 216,279,641,309.99/424,383.84
  6. Step 6: Final answer
    x = 509,632.13

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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.