Home / 728,145.60-1,091,440.80-278,692.80

Finding the Fourth Proportional to 728,145.60, 1,091,440.80 and 278,692.80

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Solution

The fourth proportional to 728,145.60, 1,091,440.80 and 278,692.80 is: 417,741.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,145.60 : 1,091,440.80 = 278,692.80 : x
  2. Step 2: Convert to fraction form
    728,145.60/1,091,440.80 = 278,692.80/x
  3. Step 3: Cross multiply
    728,145.60x = 1,091,440.80 × 278,692.80
  4. Step 4: Simplify right side
    728,145.60x = 304,176,692,586.24
  5. Step 5: Solve for x
    x = 304,176,692,586.24/728,145.60
  6. Step 6: Final answer
    x = 417,741.58

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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.