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Finding the Fourth Proportional to 678,981.48, 937,010.18 and 373,077

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Solution

The fourth proportional to 678,981.48, 937,010.18 and 373,077 is: 514,854.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,981.48 : 937,010.18 = 373,077 : x
  2. Step 2: Convert to fraction form
    678,981.48/937,010.18 = 373,077/x
  3. Step 3: Cross multiply
    678,981.48x = 937,010.18 × 373,077
  4. Step 4: Simplify right side
    678,981.48x = 349,576,946,923.86
  5. Step 5: Solve for x
    x = 349,576,946,923.86/678,981.48
  6. Step 6: Final answer
    x = 514,854.91

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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.