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Finding the Fourth Proportional to 643,602.60, 966,959.10 and 575,173.80

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Solution

The fourth proportional to 643,602.60, 966,959.10 and 575,173.80 is: 864,150.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,602.60 : 966,959.10 = 575,173.80 : x
  2. Step 2: Convert to fraction form
    643,602.60/966,959.10 = 575,173.80/x
  3. Step 3: Cross multiply
    643,602.60x = 966,959.10 × 575,173.80
  4. Step 4: Simplify right side
    643,602.60x = 556,169,539,991.58
  5. Step 5: Solve for x
    x = 556,169,539,991.58/643,602.60
  6. Step 6: Final answer
    x = 864,150.55

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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.