Home / 905,785.86-1,249,957.47-518,588.43

Finding the Fourth Proportional to 905,785.86, 1,249,957.47 and 518,588.43

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Solution

The fourth proportional to 905,785.86, 1,249,957.47 and 518,588.43 is: 715,636.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,785.86 : 1,249,957.47 = 518,588.43 : x
  2. Step 2: Convert to fraction form
    905,785.86/1,249,957.47 = 518,588.43/x
  3. Step 3: Cross multiply
    905,785.86x = 1,249,957.47 × 518,588.43
  4. Step 4: Simplify right side
    905,785.86x = 648,213,481,934.07
  5. Step 5: Solve for x
    x = 648,213,481,934.07/905,785.86
  6. Step 6: Final answer
    x = 715,636.57

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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.