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Finding the Fourth Proportional to 851,230.80, 1,174,690.80 and 469,257.59

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Solution

The fourth proportional to 851,230.80, 1,174,690.80 and 469,257.59 is: 647,571.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,230.80 : 1,174,690.80 = 469,257.59 : x
  2. Step 2: Convert to fraction form
    851,230.80/1,174,690.80 = 469,257.59/x
  3. Step 3: Cross multiply
    851,230.80x = 1,174,690.80 × 469,257.59
  4. Step 4: Simplify right side
    851,230.80x = 551,232,567,929.72
  5. Step 5: Solve for x
    x = 551,232,567,929.72/851,230.80
  6. Step 6: Final answer
    x = 647,571.22

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Double scale
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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.