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Finding the Fourth Proportional to 486,938.80, 730,408.20 and 368,840.80

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Solution

The fourth proportional to 486,938.80, 730,408.20 and 368,840.80 is: 553,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,938.80 : 730,408.20 = 368,840.80 : x
  2. Step 2: Convert to fraction form
    486,938.80/730,408.20 = 368,840.80/x
  3. Step 3: Cross multiply
    486,938.80x = 730,408.20 × 368,840.80
  4. Step 4: Simplify right side
    486,938.80x = 269,404,344,814.56
  5. Step 5: Solve for x
    x = 269,404,344,814.56/486,938.80
  6. Step 6: Final answer
    x = 553,261.20

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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.