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Finding the Fourth Proportional to 495,750.40, 682,550.40 and 420,179.20

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Solution

The fourth proportional to 495,750.40, 682,550.40 and 420,179.20 is: 578,503.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,750.40 : 682,550.40 = 420,179.20 : x
  2. Step 2: Convert to fraction form
    495,750.40/682,550.40 = 420,179.20/x
  3. Step 3: Cross multiply
    495,750.40x = 682,550.40 × 420,179.20
  4. Step 4: Simplify right side
    495,750.40x = 286,793,481,031.68
  5. Step 5: Solve for x
    x = 286,793,481,031.68/495,750.40
  6. Step 6: Final answer
    x = 578,503.78

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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.