Home / 1,438,507.10-1,985,143.94-785,139.11

Finding the Fourth Proportional to 1,438,507.10, 1,985,143.94 and 785,139.11

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Solution

The fourth proportional to 1,438,507.10, 1,985,143.94 and 785,139.11 is: 1,083,494.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,507.10 : 1,985,143.94 = 785,139.11 : x
  2. Step 2: Convert to fraction form
    1,438,507.10/1,985,143.94 = 785,139.11/x
  3. Step 3: Cross multiply
    1,438,507.10x = 1,985,143.94 × 785,139.11
  4. Step 4: Simplify right side
    1,438,507.10x = 1,558,614,146,273.49
  5. Step 5: Solve for x
    x = 1,558,614,146,273.49/1,438,507.10
  6. Step 6: Final answer
    x = 1,083,494.23

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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.