Home / 1,315,689.51-1,969,985.89-859,149.82

Finding the Fourth Proportional to 1,315,689.51, 1,969,985.89 and 859,149.82

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Solution

The fourth proportional to 1,315,689.51, 1,969,985.89 and 859,149.82 is: 1,286,407.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,689.51 : 1,969,985.89 = 859,149.82 : x
  2. Step 2: Convert to fraction form
    1,315,689.51/1,969,985.89 = 859,149.82/x
  3. Step 3: Cross multiply
    1,315,689.51x = 1,969,985.89 × 859,149.82
  4. Step 4: Simplify right side
    1,315,689.51x = 1,692,513,008,650.36
  5. Step 5: Solve for x
    x = 1,692,513,008,650.36/1,315,689.51
  6. Step 6: Final answer
    x = 1,286,407.62

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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.