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Finding the Fourth Proportional to 673,728.96, 929,721.60 and 371,916.48

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Solution

The fourth proportional to 673,728.96, 929,721.60 and 371,916.48 is: 513,231.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,728.96 : 929,721.60 = 371,916.48 : x
  2. Step 2: Convert to fraction form
    673,728.96/929,721.60 = 371,916.48/x
  3. Step 3: Cross multiply
    673,728.96x = 929,721.60 × 371,916.48
  4. Step 4: Simplify right side
    673,728.96x = 345,778,784,851.97
  5. Step 5: Solve for x
    x = 345,778,784,851.97/673,728.96
  6. Step 6: Final answer
    x = 513,231.29

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1.5x scale

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.