Home / 1,213,741.71-1,819,090.20-643,715.88

Finding the Fourth Proportional to 1,213,741.71, 1,819,090.20 and 643,715.88

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Solution

The fourth proportional to 1,213,741.71, 1,819,090.20 and 643,715.88 is: 964,766.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,741.71 : 1,819,090.20 = 643,715.88 : x
  2. Step 2: Convert to fraction form
    1,213,741.71/1,819,090.20 = 643,715.88/x
  3. Step 3: Cross multiply
    1,213,741.71x = 1,819,090.20 × 643,715.88
  4. Step 4: Simplify right side
    1,213,741.71x = 1,170,977,248,892.38
  5. Step 5: Solve for x
    x = 1,170,977,248,892.38/1,213,741.71
  6. Step 6: Final answer
    x = 964,766.42

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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.