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Finding the Fourth Proportional to 572,728.10, 859,092.15 and 319,748.90

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Solution

The fourth proportional to 572,728.10, 859,092.15 and 319,748.90 is: 479,623.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,728.10 : 859,092.15 = 319,748.90 : x
  2. Step 2: Convert to fraction form
    572,728.10/859,092.15 = 319,748.90/x
  3. Step 3: Cross multiply
    572,728.10x = 859,092.15 × 319,748.90
  4. Step 4: Simplify right side
    572,728.10x = 274,693,769,961.14
  5. Step 5: Solve for x
    x = 274,693,769,961.14/572,728.10
  6. Step 6: Final answer
    x = 479,623.35

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Half scale
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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.