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Finding the Fourth Proportional to 548,686.40, 757,446.09 and 412,772.09

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Solution

The fourth proportional to 548,686.40, 757,446.09 and 412,772.09 is: 569,820.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,686.40 : 757,446.09 = 412,772.09 : x
  2. Step 2: Convert to fraction form
    548,686.40/757,446.09 = 412,772.09/x
  3. Step 3: Cross multiply
    548,686.40x = 757,446.09 × 412,772.09
  4. Step 4: Simplify right side
    548,686.40x = 312,652,605,631.63
  5. Step 5: Solve for x
    x = 312,652,605,631.63/548,686.40
  6. Step 6: Final answer
    x = 569,820.22

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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.