Home / 858,890.80-1,288,336.20-480,977.20

Finding the Fourth Proportional to 858,890.80, 1,288,336.20 and 480,977.20

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Solution

The fourth proportional to 858,890.80, 1,288,336.20 and 480,977.20 is: 721,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,890.80 : 1,288,336.20 = 480,977.20 : x
  2. Step 2: Convert to fraction form
    858,890.80/1,288,336.20 = 480,977.20/x
  3. Step 3: Cross multiply
    858,890.80x = 1,288,336.20 × 480,977.20
  4. Step 4: Simplify right side
    858,890.80x = 619,660,338,134.64
  5. Step 5: Solve for x
    x = 619,660,338,134.64/858,890.80
  6. Step 6: Final answer
    x = 721,465.80

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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.