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Finding the Fourth Proportional to 628,819.84, 867,673.60 and 360,496

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Solution

The fourth proportional to 628,819.84, 867,673.60 and 360,496 is: 497,428.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,819.84 : 867,673.60 = 360,496 : x
  2. Step 2: Convert to fraction form
    628,819.84/867,673.60 = 360,496/x
  3. Step 3: Cross multiply
    628,819.84x = 867,673.60 × 360,496
  4. Step 4: Simplify right side
    628,819.84x = 312,792,862,105.60
  5. Step 5: Solve for x
    x = 312,792,862,105.60/628,819.84
  6. Step 6: Final answer
    x = 497,428.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.