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Finding the Fourth Proportional to 489,066.10, 733,599.15 and 426,858.10

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Solution

The fourth proportional to 489,066.10, 733,599.15 and 426,858.10 is: 640,287.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,066.10 : 733,599.15 = 426,858.10 : x
  2. Step 2: Convert to fraction form
    489,066.10/733,599.15 = 426,858.10/x
  3. Step 3: Cross multiply
    489,066.10x = 733,599.15 × 426,858.10
  4. Step 4: Simplify right side
    489,066.10x = 313,142,739,330.62
  5. Step 5: Solve for x
    x = 313,142,739,330.62/489,066.10
  6. Step 6: Final answer
    x = 640,287.15

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Similar ratio
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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.