Home / 495,898.28-684,291.78-278,115.78

Finding the Fourth Proportional to 495,898.28, 684,291.78 and 278,115.78

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Solution

The fourth proportional to 495,898.28, 684,291.78 and 278,115.78 is: 383,772.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,898.28 : 684,291.78 = 278,115.78 : x
  2. Step 2: Convert to fraction form
    495,898.28/684,291.78 = 278,115.78/x
  3. Step 3: Cross multiply
    495,898.28x = 684,291.78 × 278,115.78
  4. Step 4: Simplify right side
    495,898.28x = 190,312,342,142.29
  5. Step 5: Solve for x
    x = 190,312,342,142.29/495,898.28
  6. Step 6: Final answer
    x = 383,772.94

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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.