Home / 495,492,143.28-683,611,792.47-280,887,765

Finding the Fourth Proportional to 495,492,143.28, 683,611,792.47 and 280,887,765

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Solution

The fourth proportional to 495,492,143.28, 683,611,792.47 and 280,887,765 is: 387,530,238.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,492,143.28 : 683,611,792.47 = 280,887,765 : x
  2. Step 2: Convert to fraction form
    495,492,143.28/683,611,792.47 = 280,887,765/x
  3. Step 3: Cross multiply
    495,492,143.28x = 683,611,792.47 × 280,887,765
  4. Step 4: Simplify right side
    495,492,143.28x = 192,018,188,514,542,144
  5. Step 5: Solve for x
    x = 192,018,188,514,542,144/495,492,143.28
  6. Step 6: Final answer
    x = 387,530,238.61

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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.