Home / 1,315,686.72-1,815,647.64-712,074.72

Finding the Fourth Proportional to 1,315,686.72, 1,815,647.64 and 712,074.72

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Solution

The fourth proportional to 1,315,686.72, 1,815,647.64 and 712,074.72 is: 982,663.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,686.72 : 1,815,647.64 = 712,074.72 : x
  2. Step 2: Convert to fraction form
    1,315,686.72/1,815,647.64 = 712,074.72/x
  3. Step 3: Cross multiply
    1,315,686.72x = 1,815,647.64 × 712,074.72
  4. Step 4: Simplify right side
    1,315,686.72x = 1,292,876,784,871.66
  5. Step 5: Solve for x
    x = 1,292,876,784,871.66/1,315,686.72
  6. Step 6: Final answer
    x = 982,663.10

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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.