Home / 1,243,421.64-1,862,691.75-644,774.13

Finding the Fourth Proportional to 1,243,421.64, 1,862,691.75 and 644,774.13

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Solution

The fourth proportional to 1,243,421.64, 1,862,691.75 and 644,774.13 is: 965,895.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,421.64 : 1,862,691.75 = 644,774.13 : x
  2. Step 2: Convert to fraction form
    1,243,421.64/1,862,691.75 = 644,774.13/x
  3. Step 3: Cross multiply
    1,243,421.64x = 1,862,691.75 × 644,774.13
  4. Step 4: Simplify right side
    1,243,421.64x = 1,201,015,452,564.43
  5. Step 5: Solve for x
    x = 1,201,015,452,564.43/1,243,421.64
  6. Step 6: Final answer
    x = 965,895.57

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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.