Home / 905,612.08-1,249,718.25-518,414.67

Finding the Fourth Proportional to 905,612.08, 1,249,718.25 and 518,414.67

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Solution

The fourth proportional to 905,612.08, 1,249,718.25 and 518,414.67 is: 715,397.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,612.08 : 1,249,718.25 = 518,414.67 : x
  2. Step 2: Convert to fraction form
    905,612.08/1,249,718.25 = 518,414.67/x
  3. Step 3: Cross multiply
    905,612.08x = 1,249,718.25 × 518,414.67
  4. Step 4: Simplify right side
    905,612.08x = 647,872,274,166.73
  5. Step 5: Solve for x
    x = 647,872,274,166.73/905,612.08
  6. Step 6: Final answer
    x = 715,397.12

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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.