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Finding the Fourth Proportional to 518,579.80, 777,812.10 and 424,922.20

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Solution

The fourth proportional to 518,579.80, 777,812.10 and 424,922.20 is: 637,336.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,579.80 : 777,812.10 = 424,922.20 : x
  2. Step 2: Convert to fraction form
    518,579.80/777,812.10 = 424,922.20/x
  3. Step 3: Cross multiply
    518,579.80x = 777,812.10 × 424,922.20
  4. Step 4: Simplify right side
    518,579.80x = 330,509,628,718.62
  5. Step 5: Solve for x
    x = 330,509,628,718.62/518,579.80
  6. Step 6: Final answer
    x = 637,336.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.