Home / 777,733.80-1,073,272.40-420,037.80

Finding the Fourth Proportional to 777,733.80, 1,073,272.40 and 420,037.80

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Solution

The fourth proportional to 777,733.80, 1,073,272.40 and 420,037.80 is: 579,652.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,733.80 : 1,073,272.40 = 420,037.80 : x
  2. Step 2: Convert to fraction form
    777,733.80/1,073,272.40 = 420,037.80/x
  3. Step 3: Cross multiply
    777,733.80x = 1,073,272.40 × 420,037.80
  4. Step 4: Simplify right side
    777,733.80x = 450,814,977,696.72
  5. Step 5: Solve for x
    x = 450,814,977,696.72/777,733.80
  6. Step 6: Final answer
    x = 579,652.03

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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.