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Finding the Fourth Proportional to 738,074.84, 1,018,546.86 and 415,790

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Solution

The fourth proportional to 738,074.84, 1,018,546.86 and 415,790 is: 573,792.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,074.84 : 1,018,546.86 = 415,790 : x
  2. Step 2: Convert to fraction form
    738,074.84/1,018,546.86 = 415,790/x
  3. Step 3: Cross multiply
    738,074.84x = 1,018,546.86 × 415,790
  4. Step 4: Simplify right side
    738,074.84x = 423,501,598,919.40
  5. Step 5: Solve for x
    x = 423,501,598,919.40/738,074.84
  6. Step 6: Final answer
    x = 573,792.22

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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.