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Finding the Fourth Proportional to 1,185,549, 1,635,611.12 and 777,875.80

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Solution

The fourth proportional to 1,185,549, 1,635,611.12 and 777,875.80 is: 1,073,175.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,549 : 1,635,611.12 = 777,875.80 : x
  2. Step 2: Convert to fraction form
    1,185,549/1,635,611.12 = 777,875.80/x
  3. Step 3: Cross multiply
    1,185,549x = 1,635,611.12 × 777,875.80
  4. Step 4: Simplify right side
    1,185,549x = 1,272,302,308,458.90
  5. Step 5: Solve for x
    x = 1,272,302,308,458.90/1,185,549
  6. Step 6: Final answer
    x = 1,073,175.64

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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.