Home / 495,500.42-683,803.24-280,637.30

Finding the Fourth Proportional to 495,500.42, 683,803.24 and 280,637.30

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Solution

The fourth proportional to 495,500.42, 683,803.24 and 280,637.30 is: 387,286.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,500.42 : 683,803.24 = 280,637.30 : x
  2. Step 2: Convert to fraction form
    495,500.42/683,803.24 = 280,637.30/x
  3. Step 3: Cross multiply
    495,500.42x = 683,803.24 × 280,637.30
  4. Step 4: Simplify right side
    495,500.42x = 191,900,695,004.85
  5. Step 5: Solve for x
    x = 191,900,695,004.85/495,500.42
  6. Step 6: Final answer
    x = 387,286.64

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1.5x scale

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.