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Finding the Fourth Proportional to 557,792.81, 769,738.10 and 316,153.47

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Solution

The fourth proportional to 557,792.81, 769,738.10 and 316,153.47 is: 436,282.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,792.81 : 769,738.10 = 316,153.47 : x
  2. Step 2: Convert to fraction form
    557,792.81/769,738.10 = 316,153.47/x
  3. Step 3: Cross multiply
    557,792.81x = 769,738.10 × 316,153.47
  4. Step 4: Simplify right side
    557,792.81x = 243,355,369,725.44
  5. Step 5: Solve for x
    x = 243,355,369,725.44/557,792.81
  6. Step 6: Final answer
    x = 436,282.73

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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.