Home / 1,400,638.19-2,101,613.38-690,278.72

Finding the Fourth Proportional to 1,400,638.19, 2,101,613.38 and 690,278.72

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Solution

The fourth proportional to 1,400,638.19, 2,101,613.38 and 690,278.72 is: 1,035,741.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,638.19 : 2,101,613.38 = 690,278.72 : x
  2. Step 2: Convert to fraction form
    1,400,638.19/2,101,613.38 = 690,278.72/x
  3. Step 3: Cross multiply
    1,400,638.19x = 2,101,613.38 × 690,278.72
  4. Step 4: Simplify right side
    1,400,638.19x = 1,450,698,981,647.51
  5. Step 5: Solve for x
    x = 1,450,698,981,647.51/1,400,638.19
  6. Step 6: Final answer
    x = 1,035,741.42

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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.