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Finding the Fourth Proportional to 453,080.98, 625,346.89 and 287,401.78

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Solution

The fourth proportional to 453,080.98, 625,346.89 and 287,401.78 is: 396,674.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,080.98 : 625,346.89 = 287,401.78 : x
  2. Step 2: Convert to fraction form
    453,080.98/625,346.89 = 287,401.78/x
  3. Step 3: Cross multiply
    453,080.98x = 625,346.89 × 287,401.78
  4. Step 4: Simplify right side
    453,080.98x = 179,725,809,303.46
  5. Step 5: Solve for x
    x = 179,725,809,303.46/453,080.98
  6. Step 6: Final answer
    x = 396,674.80

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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.