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Finding the Fourth Proportional to 522,088.30, 783,132.45 and 321,759.10

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Solution

The fourth proportional to 522,088.30, 783,132.45 and 321,759.10 is: 482,638.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,088.30 : 783,132.45 = 321,759.10 : x
  2. Step 2: Convert to fraction form
    522,088.30/783,132.45 = 321,759.10/x
  3. Step 3: Cross multiply
    522,088.30x = 783,132.45 × 321,759.10
  4. Step 4: Simplify right side
    522,088.30x = 251,979,992,292.80
  5. Step 5: Solve for x
    x = 251,979,992,292.80/522,088.30
  6. Step 6: Final answer
    x = 482,638.65

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Double scale
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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.