Home / 905,610.29-1,249,715.77-518,412.87

Finding the Fourth Proportional to 905,610.29, 1,249,715.77 and 518,412.87

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Solution

The fourth proportional to 905,610.29, 1,249,715.77 and 518,412.87 is: 715,394.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,610.29 : 1,249,715.77 = 518,412.87 : x
  2. Step 2: Convert to fraction form
    905,610.29/1,249,715.77 = 518,412.87/x
  3. Step 3: Cross multiply
    905,610.29x = 1,249,715.77 × 518,412.87
  4. Step 4: Simplify right side
    905,610.29x = 647,868,737,713.93
  5. Step 5: Solve for x
    x = 647,868,737,713.93/905,610.29
  6. Step 6: Final answer
    x = 715,394.63

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1.5x scale

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.