Home / 808,725.80-1,214,087.10-509,205.80

Finding the Fourth Proportional to 808,725.80, 1,214,087.10 and 509,205.80

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Solution

The fourth proportional to 808,725.80, 1,214,087.10 and 509,205.80 is: 764,437.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,725.80 : 1,214,087.10 = 509,205.80 : x
  2. Step 2: Convert to fraction form
    808,725.80/1,214,087.10 = 509,205.80/x
  3. Step 3: Cross multiply
    808,725.80x = 1,214,087.10 × 509,205.80
  4. Step 4: Simplify right side
    808,725.80x = 618,220,193,025.18
  5. Step 5: Solve for x
    x = 618,220,193,025.18/808,725.80
  6. Step 6: Final answer
    x = 764,437.33

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Double scale
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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.