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Finding the Fourth Proportional to 825,615.20, 1,238,422.80 and 573,672.80

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Solution

The fourth proportional to 825,615.20, 1,238,422.80 and 573,672.80 is: 860,509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,615.20 : 1,238,422.80 = 573,672.80 : x
  2. Step 2: Convert to fraction form
    825,615.20/1,238,422.80 = 573,672.80/x
  3. Step 3: Cross multiply
    825,615.20x = 1,238,422.80 × 573,672.80
  4. Step 4: Simplify right side
    825,615.20x = 710,449,475,259.84
  5. Step 5: Solve for x
    x = 710,449,475,259.84/825,615.20
  6. Step 6: Final answer
    x = 860,509.20

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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.