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Finding the Fourth Proportional to 529,259.20, 793,888.80 and 478,520.80

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Solution

The fourth proportional to 529,259.20, 793,888.80 and 478,520.80 is: 717,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,259.20 : 793,888.80 = 478,520.80 : x
  2. Step 2: Convert to fraction form
    529,259.20/793,888.80 = 478,520.80/x
  3. Step 3: Cross multiply
    529,259.20x = 793,888.80 × 478,520.80
  4. Step 4: Simplify right side
    529,259.20x = 379,892,303,687.04
  5. Step 5: Solve for x
    x = 379,892,303,687.04/529,259.20
  6. Step 6: Final answer
    x = 717,781.20

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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.