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Finding the Fourth Proportional to 674,136.48, 930,302.64 and 372,324

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Solution

The fourth proportional to 674,136.48, 930,302.64 and 372,324 is: 513,803.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,136.48 : 930,302.64 = 372,324 : x
  2. Step 2: Convert to fraction form
    674,136.48/930,302.64 = 372,324/x
  3. Step 3: Cross multiply
    674,136.48x = 930,302.64 × 372,324
  4. Step 4: Simplify right side
    674,136.48x = 346,374,000,135.36
  5. Step 5: Solve for x
    x = 346,374,000,135.36/674,136.48
  6. Step 6: Final answer
    x = 513,803.97

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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.