Home / 905,729.14-1,249,919.05-497,868.69

Finding the Fourth Proportional to 905,729.14, 1,249,919.05 and 497,868.69

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Solution

The fourth proportional to 905,729.14, 1,249,919.05 and 497,868.69 is: 687,065.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,729.14 : 1,249,919.05 = 497,868.69 : x
  2. Step 2: Convert to fraction form
    905,729.14/1,249,919.05 = 497,868.69/x
  3. Step 3: Cross multiply
    905,729.14x = 1,249,919.05 × 497,868.69
  4. Step 4: Simplify right side
    905,729.14x = 622,295,564,405.57
  5. Step 5: Solve for x
    x = 622,295,564,405.57/905,729.14
  6. Step 6: Final answer
    x = 687,065.85

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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.