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Finding the Fourth Proportional to 561,657.20, 842,485.80 and 491,673.20

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Solution

The fourth proportional to 561,657.20, 842,485.80 and 491,673.20 is: 737,509.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,657.20 : 842,485.80 = 491,673.20 : x
  2. Step 2: Convert to fraction form
    561,657.20/842,485.80 = 491,673.20/x
  3. Step 3: Cross multiply
    561,657.20x = 842,485.80 × 491,673.20
  4. Step 4: Simplify right side
    561,657.20x = 414,227,689,240.56
  5. Step 5: Solve for x
    x = 414,227,689,240.56/561,657.20
  6. Step 6: Final answer
    x = 737,509.80

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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.