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Finding the Fourth Proportional to 672,472.84, 928,018.74 and 370,677.64

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Solution

The fourth proportional to 672,472.84, 928,018.74 and 370,677.64 is: 511,538.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,472.84 : 928,018.74 = 370,677.64 : x
  2. Step 2: Convert to fraction form
    672,472.84/928,018.74 = 370,677.64/x
  3. Step 3: Cross multiply
    672,472.84x = 928,018.74 × 370,677.64
  4. Step 4: Simplify right side
    672,472.84x = 343,995,796,418.97
  5. Step 5: Solve for x
    x = 343,995,796,418.97/672,472.84
  6. Step 6: Final answer
    x = 511,538.57

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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.