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Finding the Fourth Proportional to 529,530.60, 794,295.90 and 319,060.20

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Solution

The fourth proportional to 529,530.60, 794,295.90 and 319,060.20 is: 478,590.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,530.60 : 794,295.90 = 319,060.20 : x
  2. Step 2: Convert to fraction form
    529,530.60/794,295.90 = 319,060.20/x
  3. Step 3: Cross multiply
    529,530.60x = 794,295.90 × 319,060.20
  4. Step 4: Simplify right side
    529,530.60x = 253,428,208,713.18
  5. Step 5: Solve for x
    x = 253,428,208,713.18/529,530.60
  6. Step 6: Final answer
    x = 478,590.30

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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.