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Finding the Fourth Proportional to 547,347.78, 755,340.39 and 305,630.01

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Solution

The fourth proportional to 547,347.78, 755,340.39 and 305,630.01 is: 421,769.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,347.78 : 755,340.39 = 305,630.01 : x
  2. Step 2: Convert to fraction form
    547,347.78/755,340.39 = 305,630.01/x
  3. Step 3: Cross multiply
    547,347.78x = 755,340.39 × 305,630.01
  4. Step 4: Simplify right side
    547,347.78x = 230,854,690,949.10
  5. Step 5: Solve for x
    x = 230,854,690,949.10/547,347.78
  6. Step 6: Final answer
    x = 421,769.67

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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.