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Finding the Fourth Proportional to 555,792.28, 766,957.72 and 310,797.21

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Solution

The fourth proportional to 555,792.28, 766,957.72 and 310,797.21 is: 428,880.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,792.28 : 766,957.72 = 310,797.21 : x
  2. Step 2: Convert to fraction form
    555,792.28/766,957.72 = 310,797.21/x
  3. Step 3: Cross multiply
    555,792.28x = 766,957.72 × 310,797.21
  4. Step 4: Simplify right side
    555,792.28x = 238,368,318,009.98
  5. Step 5: Solve for x
    x = 238,368,318,009.98/555,792.28
  6. Step 6: Final answer
    x = 428,880.23

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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.