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Finding the Fourth Proportional to 679,752, 938,057.76 and 377,946

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Solution

The fourth proportional to 679,752, 938,057.76 and 377,946 is: 521,565.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,752 : 938,057.76 = 377,946 : x
  2. Step 2: Convert to fraction form
    679,752/938,057.76 = 377,946/x
  3. Step 3: Cross multiply
    679,752x = 938,057.76 × 377,946
  4. Step 4: Simplify right side
    679,752x = 354,535,178,160.96
  5. Step 5: Solve for x
    x = 354,535,178,160.96/679,752
  6. Step 6: Final answer
    x = 521,565.48

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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.