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Finding the Fourth Proportional to 503,406.40, 755,109.60 and 304,340.80

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Solution

The fourth proportional to 503,406.40, 755,109.60 and 304,340.80 is: 456,511.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,406.40 : 755,109.60 = 304,340.80 : x
  2. Step 2: Convert to fraction form
    503,406.40/755,109.60 = 304,340.80/x
  3. Step 3: Cross multiply
    503,406.40x = 755,109.60 × 304,340.80
  4. Step 4: Simplify right side
    503,406.40x = 229,810,659,751.68
  5. Step 5: Solve for x
    x = 229,810,659,751.68/503,406.40
  6. Step 6: Final answer
    x = 456,511.20

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Similar ratio
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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.