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Finding the Fourth Proportional to 585,072.60, 877,637.70 and 305,136.60

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Solution

The fourth proportional to 585,072.60, 877,637.70 and 305,136.60 is: 457,719.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,072.60 : 877,637.70 = 305,136.60 : x
  2. Step 2: Convert to fraction form
    585,072.60/877,637.70 = 305,136.60/x
  3. Step 3: Cross multiply
    585,072.60x = 877,637.70 × 305,136.60
  4. Step 4: Simplify right side
    585,072.60x = 267,799,383,809.82
  5. Step 5: Solve for x
    x = 267,799,383,809.82/585,072.60
  6. Step 6: Final answer
    x = 457,719.92

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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.