Home / 825,375.80-1,139,254.80-486,040.88

Finding the Fourth Proportional to 825,375.80, 1,139,254.80 and 486,040.88

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Solution

The fourth proportional to 825,375.80, 1,139,254.80 and 486,040.88 is: 670,875.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,375.80 : 1,139,254.80 = 486,040.88 : x
  2. Step 2: Convert to fraction form
    825,375.80/1,139,254.80 = 486,040.88/x
  3. Step 3: Cross multiply
    825,375.80x = 1,139,254.80 × 486,040.88
  4. Step 4: Simplify right side
    825,375.80x = 553,724,405,536.22
  5. Step 5: Solve for x
    x = 553,724,405,536.22/825,375.80
  6. Step 6: Final answer
    x = 670,875.50

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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.