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Finding the Fourth Proportional to 548,613.20, 822,919.80 and 478,629.20

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Solution

The fourth proportional to 548,613.20, 822,919.80 and 478,629.20 is: 717,943.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,613.20 : 822,919.80 = 478,629.20 : x
  2. Step 2: Convert to fraction form
    548,613.20/822,919.80 = 478,629.20/x
  3. Step 3: Cross multiply
    548,613.20x = 822,919.80 × 478,629.20
  4. Step 4: Simplify right side
    548,613.20x = 393,873,445,538.16
  5. Step 5: Solve for x
    x = 393,873,445,538.16/548,613.20
  6. Step 6: Final answer
    x = 717,943.80

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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.