Home / 905,614.08-1,249,721-518,416.66

Finding the Fourth Proportional to 905,614.08, 1,249,721 and 518,416.66

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Solution

The fourth proportional to 905,614.08, 1,249,721 and 518,416.66 is: 715,399.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,614.08 : 1,249,721 = 518,416.66 : x
  2. Step 2: Convert to fraction form
    905,614.08/1,249,721 = 518,416.66/x
  3. Step 3: Cross multiply
    905,614.08x = 1,249,721 × 518,416.66
  4. Step 4: Simplify right side
    905,614.08x = 647,876,186,751.86
  5. Step 5: Solve for x
    x = 647,876,186,751.86/905,614.08
  6. Step 6: Final answer
    x = 715,399.86

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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.