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Finding the Fourth Proportional to 561,593.07, 774,908.82 and 319,880.34

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Solution

The fourth proportional to 561,593.07, 774,908.82 and 319,880.34 is: 441,383.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,593.07 : 774,908.82 = 319,880.34 : x
  2. Step 2: Convert to fraction form
    561,593.07/774,908.82 = 319,880.34/x
  3. Step 3: Cross multiply
    561,593.07x = 774,908.82 × 319,880.34
  4. Step 4: Simplify right side
    561,593.07x = 247,878,096,810.60
  5. Step 5: Solve for x
    x = 247,878,096,810.60/561,593.07
  6. Step 6: Final answer
    x = 441,383.82

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1.5x scale

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.