Home / 905,635.88-1,249,751.15-518,438.22

Finding the Fourth Proportional to 905,635.88, 1,249,751.15 and 518,438.22

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Solution

The fourth proportional to 905,635.88, 1,249,751.15 and 518,438.22 is: 715,429.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,635.88 : 1,249,751.15 = 518,438.22 : x
  2. Step 2: Convert to fraction form
    905,635.88/1,249,751.15 = 518,438.22/x
  3. Step 3: Cross multiply
    905,635.88x = 1,249,751.15 × 518,438.22
  4. Step 4: Simplify right side
    905,635.88x = 647,918,765,687.47
  5. Step 5: Solve for x
    x = 647,918,765,687.47/905,635.88
  6. Step 6: Final answer
    x = 715,429.66

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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.