Home / 644,581,633.60-966,769,807.20-213,760,129.60

Finding the Fourth Proportional to 644,581,633.60, 966,769,807.20 and 213,760,129.60

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Solution

The fourth proportional to 644,581,633.60, 966,769,807.20 and 213,760,129.60 is: 320,606,155.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,581,633.60 : 966,769,807.20 = 213,760,129.60 : x
  2. Step 2: Convert to fraction form
    644,581,633.60/966,769,807.20 = 213,760,129.60/x
  3. Step 3: Cross multiply
    644,581,633.60x = 966,769,807.20 × 213,760,129.60
  4. Step 4: Simplify right side
    644,581,633.60x = 206,656,839,280,439,008
  5. Step 5: Solve for x
    x = 206,656,839,280,439,008/644,581,633.60
  6. Step 6: Final answer
    x = 320,606,155.23

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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.