Home / 495,320.64-683,542.89-280,461.05

Finding the Fourth Proportional to 495,320.64, 683,542.89 and 280,461.05

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Solution

The fourth proportional to 495,320.64, 683,542.89 and 280,461.05 is: 387,036.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,320.64 : 683,542.89 = 280,461.05 : x
  2. Step 2: Convert to fraction form
    495,320.64/683,542.89 = 280,461.05/x
  3. Step 3: Cross multiply
    495,320.64x = 683,542.89 × 280,461.05
  4. Step 4: Simplify right side
    495,320.64x = 191,707,156,649.44
  5. Step 5: Solve for x
    x = 191,707,156,649.44/495,320.64
  6. Step 6: Final answer
    x = 387,036.48

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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.