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Finding the Fourth Proportional to 547,482.90, 755,511.04 and 305,758.38

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Solution

The fourth proportional to 547,482.90, 755,511.04 and 305,758.38 is: 421,937.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,482.90 : 755,511.04 = 305,758.38 : x
  2. Step 2: Convert to fraction form
    547,482.90/755,511.04 = 305,758.38/x
  3. Step 3: Cross multiply
    547,482.90x = 755,511.04 × 305,758.38
  4. Step 4: Simplify right side
    547,482.90x = 231,003,831,662.52
  5. Step 5: Solve for x
    x = 231,003,831,662.52/547,482.90
  6. Step 6: Final answer
    x = 421,937.99

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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.