Home / 905,607.27-1,249,711.62-518,409.86

Finding the Fourth Proportional to 905,607.27, 1,249,711.62 and 518,409.86

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Solution

The fourth proportional to 905,607.27, 1,249,711.62 and 518,409.86 is: 715,390.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,607.27 : 1,249,711.62 = 518,409.86 : x
  2. Step 2: Convert to fraction form
    905,607.27/1,249,711.62 = 518,409.86/x
  3. Step 3: Cross multiply
    905,607.27x = 1,249,711.62 × 518,409.86
  4. Step 4: Simplify right side
    905,607.27x = 647,862,819,716.02
  5. Step 5: Solve for x
    x = 647,862,819,716.02/905,607.27
  6. Step 6: Final answer
    x = 715,390.48

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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.