Home / 495,012.83-683,128.55-280,153.04

Finding the Fourth Proportional to 495,012.83, 683,128.55 and 280,153.04

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Solution

The fourth proportional to 495,012.83, 683,128.55 and 280,153.04 is: 386,617.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,012.83 : 683,128.55 = 280,153.04 : x
  2. Step 2: Convert to fraction form
    495,012.83/683,128.55 = 280,153.04/x
  3. Step 3: Cross multiply
    495,012.83x = 683,128.55 × 280,153.04
  4. Step 4: Simplify right side
    495,012.83x = 191,380,537,278.03
  5. Step 5: Solve for x
    x = 191,380,537,278.03/495,012.83
  6. Step 6: Final answer
    x = 386,617.33

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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.