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Finding the Fourth Proportional to 522,806.40, 784,987.20 and 404,611.20

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Solution

The fourth proportional to 522,806.40, 784,987.20 and 404,611.20 is: 607,518.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,806.40 : 784,987.20 = 404,611.20 : x
  2. Step 2: Convert to fraction form
    522,806.40/784,987.20 = 404,611.20/x
  3. Step 3: Cross multiply
    522,806.40x = 784,987.20 × 404,611.20
  4. Step 4: Simplify right side
    522,806.40x = 317,614,612,976.64
  5. Step 5: Solve for x
    x = 317,614,612,976.64/522,806.40
  6. Step 6: Final answer
    x = 607,518.60

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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.