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Finding the Fourth Proportional to 561,476.88, 774,874.94 and 316,522.08

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Solution

The fourth proportional to 561,476.88, 774,874.94 and 316,522.08 is: 436,821.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,476.88 : 774,874.94 = 316,522.08 : x
  2. Step 2: Convert to fraction form
    561,476.88/774,874.94 = 316,522.08/x
  3. Step 3: Cross multiply
    561,476.88x = 774,874.94 × 316,522.08
  4. Step 4: Simplify right side
    561,476.88x = 245,265,027,748.68
  5. Step 5: Solve for x
    x = 245,265,027,748.68/561,476.88
  6. Step 6: Final answer
    x = 436,821.24

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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.