Home / 839,814.80-1,261,034.40-485,520.80

Finding the Fourth Proportional to 839,814.80, 1,261,034.40 and 485,520.80

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Solution

The fourth proportional to 839,814.80, 1,261,034.40 and 485,520.80 is: 729,039.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,814.80 : 1,261,034.40 = 485,520.80 : x
  2. Step 2: Convert to fraction form
    839,814.80/1,261,034.40 = 485,520.80/x
  3. Step 3: Cross multiply
    839,814.80x = 1,261,034.40 × 485,520.80
  4. Step 4: Simplify right side
    839,814.80x = 612,258,430,715.52
  5. Step 5: Solve for x
    x = 612,258,430,715.52/839,814.80
  6. Step 6: Final answer
    x = 729,039.82

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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.