Home / 1,315,689.72-1,815,651.78-712,077.72

Finding the Fourth Proportional to 1,315,689.72, 1,815,651.78 and 712,077.72

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Solution

The fourth proportional to 1,315,689.72, 1,815,651.78 and 712,077.72 is: 982,667.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,689.72 : 1,815,651.78 = 712,077.72 : x
  2. Step 2: Convert to fraction form
    1,315,689.72/1,815,651.78 = 712,077.72/x
  3. Step 3: Cross multiply
    1,315,689.72x = 1,815,651.78 × 712,077.72
  4. Step 4: Simplify right side
    1,315,689.72x = 1,292,885,179,816.34
  5. Step 5: Solve for x
    x = 1,292,885,179,816.34/1,315,689.72
  6. Step 6: Final answer
    x = 982,667.24

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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.