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Finding the Fourth Proportional to 807,458.80, 1,208,855.40 and 492,530.80

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Solution

The fourth proportional to 807,458.80, 1,208,855.40 and 492,530.80 is: 737,373.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,458.80 : 1,208,855.40 = 492,530.80 : x
  2. Step 2: Convert to fraction form
    807,458.80/1,208,855.40 = 492,530.80/x
  3. Step 3: Cross multiply
    807,458.80x = 1,208,855.40 × 492,530.80
  4. Step 4: Simplify right side
    807,458.80x = 595,398,517,246.32
  5. Step 5: Solve for x
    x = 595,398,517,246.32/807,458.80
  6. Step 6: Final answer
    x = 737,373.25

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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.