Home / 786,570.24-1,085,474.40-447,040.80

Finding the Fourth Proportional to 786,570.24, 1,085,474.40 and 447,040.80

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Solution

The fourth proportional to 786,570.24, 1,085,474.40 and 447,040.80 is: 616,920.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,570.24 : 1,085,474.40 = 447,040.80 : x
  2. Step 2: Convert to fraction form
    786,570.24/1,085,474.40 = 447,040.80/x
  3. Step 3: Cross multiply
    786,570.24x = 1,085,474.40 × 447,040.80
  4. Step 4: Simplify right side
    786,570.24x = 485,251,344,155.52
  5. Step 5: Solve for x
    x = 485,251,344,155.52/786,570.24
  6. Step 6: Final answer
    x = 616,920.55

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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.