Home / 905,730.11-1,249,920.39-497,869.67

Finding the Fourth Proportional to 905,730.11, 1,249,920.39 and 497,869.67

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Solution

The fourth proportional to 905,730.11, 1,249,920.39 and 497,869.67 is: 687,067.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,730.11 : 1,249,920.39 = 497,869.67 : x
  2. Step 2: Convert to fraction form
    905,730.11/1,249,920.39 = 497,869.67/x
  3. Step 3: Cross multiply
    905,730.11x = 1,249,920.39 × 497,869.67
  4. Step 4: Simplify right side
    905,730.11x = 622,297,445,845.97
  5. Step 5: Solve for x
    x = 622,297,445,845.97/905,730.11
  6. Step 6: Final answer
    x = 687,067.19

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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.