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Finding the Fourth Proportional to 495,365.12, 683,612 and 280,499.52

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Solution

The fourth proportional to 495,365.12, 683,612 and 280,499.52 is: 387,093.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,365.12 : 683,612 = 280,499.52 : x
  2. Step 2: Convert to fraction form
    495,365.12/683,612 = 280,499.52/x
  3. Step 3: Cross multiply
    495,365.12x = 683,612 × 280,499.52
  4. Step 4: Simplify right side
    495,365.12x = 191,752,837,866.24
  5. Step 5: Solve for x
    x = 191,752,837,866.24/495,365.12
  6. Step 6: Final answer
    x = 387,093.94

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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.