Home / 495,120.86-683,283.06-280,256.31

Finding the Fourth Proportional to 495,120.86, 683,283.06 and 280,256.31

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Solution

The fourth proportional to 495,120.86, 683,283.06 and 280,256.31 is: 386,762.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,120.86 : 683,283.06 = 280,256.31 : x
  2. Step 2: Convert to fraction form
    495,120.86/683,283.06 = 280,256.31/x
  3. Step 3: Cross multiply
    495,120.86x = 683,283.06 × 280,256.31
  4. Step 4: Simplify right side
    495,120.86x = 191,494,389,081.11
  5. Step 5: Solve for x
    x = 191,494,389,081.11/495,120.86
  6. Step 6: Final answer
    x = 386,762.92

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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.