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Finding the Fourth Proportional to 450,452.98, 621,625.35 and 280,687.78

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Solution

The fourth proportional to 450,452.98, 621,625.35 and 280,687.78 is: 387,349.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,452.98 : 621,625.35 = 280,687.78 : x
  2. Step 2: Convert to fraction form
    450,452.98/621,625.35 = 280,687.78/x
  3. Step 3: Cross multiply
    450,452.98x = 621,625.35 × 280,687.78
  4. Step 4: Simplify right side
    450,452.98x = 174,482,639,483.22
  5. Step 5: Solve for x
    x = 174,482,639,483.22/450,452.98
  6. Step 6: Final answer
    x = 387,349.28

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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.