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Finding the Fourth Proportional to 561,039.45, 842,087.70 and 294,990.90

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Solution

The fourth proportional to 561,039.45, 842,087.70 and 294,990.90 is: 442,764.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,039.45 : 842,087.70 = 294,990.90 : x
  2. Step 2: Convert to fraction form
    561,039.45/842,087.70 = 294,990.90/x
  3. Step 3: Cross multiply
    561,039.45x = 842,087.70 × 294,990.90
  4. Step 4: Simplify right side
    561,039.45x = 248,408,208,501.93
  5. Step 5: Solve for x
    x = 248,408,208,501.93/561,039.45
  6. Step 6: Final answer
    x = 442,764.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.