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Finding the Fourth Proportional to 1,315,847.93, 1,815,872.87 and 712,235.93

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Solution

The fourth proportional to 1,315,847.93, 1,815,872.87 and 712,235.93 is: 982,887.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,847.93 : 1,815,872.87 = 712,235.93 : x
  2. Step 2: Convert to fraction form
    1,315,847.93/1,815,872.87 = 712,235.93/x
  3. Step 3: Cross multiply
    1,315,847.93x = 1,815,872.87 × 712,235.93
  4. Step 4: Simplify right side
    1,315,847.93x = 1,293,329,898,765.04
  5. Step 5: Solve for x
    x = 1,293,329,898,765.04/1,315,847.93
  6. Step 6: Final answer
    x = 982,887.06

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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.