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Finding the Fourth Proportional to 678,397.44, 936,151.92 and 376,572

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Solution

The fourth proportional to 678,397.44, 936,151.92 and 376,572 is: 519,649.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,397.44 : 936,151.92 = 376,572 : x
  2. Step 2: Convert to fraction form
    678,397.44/936,151.92 = 376,572/x
  3. Step 3: Cross multiply
    678,397.44x = 936,151.92 × 376,572
  4. Step 4: Simplify right side
    678,397.44x = 352,528,600,818.24
  5. Step 5: Solve for x
    x = 352,528,600,818.24/678,397.44
  6. Step 6: Final answer
    x = 519,649.07

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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.