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Finding the Fourth Proportional to 769,602.70, 1,154,404.05 and 208,637.20

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Solution

The fourth proportional to 769,602.70, 1,154,404.05 and 208,637.20 is: 312,955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,602.70 : 1,154,404.05 = 208,637.20 : x
  2. Step 2: Convert to fraction form
    769,602.70/1,154,404.05 = 208,637.20/x
  3. Step 3: Cross multiply
    769,602.70x = 1,154,404.05 × 208,637.20
  4. Step 4: Simplify right side
    769,602.70x = 240,851,628,660.66
  5. Step 5: Solve for x
    x = 240,851,628,660.66/769,602.70
  6. Step 6: Final answer
    x = 312,955.80

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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.