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Finding the Fourth Proportional to 561,448.06, 774,835.07 and 316,493.12

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Solution

The fourth proportional to 561,448.06, 774,835.07 and 316,493.12 is: 436,781.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,448.06 : 774,835.07 = 316,493.12 : x
  2. Step 2: Convert to fraction form
    561,448.06/774,835.07 = 316,493.12/x
  3. Step 3: Cross multiply
    561,448.06x = 774,835.07 × 316,493.12
  4. Step 4: Simplify right side
    561,448.06x = 245,229,969,144.34
  5. Step 5: Solve for x
    x = 245,229,969,144.34/561,448.06
  6. Step 6: Final answer
    x = 436,781.22

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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.