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Finding the Fourth Proportional to 495,468.91, 683,756.10 and 280,653.57

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Solution

The fourth proportional to 495,468.91, 683,756.10 and 280,653.57 is: 387,307.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,468.91 : 683,756.10 = 280,653.57 : x
  2. Step 2: Convert to fraction form
    495,468.91/683,756.10 = 280,653.57/x
  3. Step 3: Cross multiply
    495,468.91x = 683,756.10 × 280,653.57
  4. Step 4: Simplify right side
    495,468.91x = 191,898,590,474.28
  5. Step 5: Solve for x
    x = 191,898,590,474.28/495,468.91
  6. Step 6: Final answer
    x = 387,307.03

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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.