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Finding the Fourth Proportional to 572,565.70, 858,848.55 and 320,623.30

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Solution

The fourth proportional to 572,565.70, 858,848.55 and 320,623.30 is: 480,934.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,565.70 : 858,848.55 = 320,623.30 : x
  2. Step 2: Convert to fraction form
    572,565.70/858,848.55 = 320,623.30/x
  3. Step 3: Cross multiply
    572,565.70x = 858,848.55 × 320,623.30
  4. Step 4: Simplify right side
    572,565.70x = 275,366,856,301.22
  5. Step 5: Solve for x
    x = 275,366,856,301.22/572,565.70
  6. Step 6: Final answer
    x = 480,934.95

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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.