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Finding the Fourth Proportional to 865,697.60, 1,298,546.40 and 533,460.80

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Solution

The fourth proportional to 865,697.60, 1,298,546.40 and 533,460.80 is: 800,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,697.60 : 1,298,546.40 = 533,460.80 : x
  2. Step 2: Convert to fraction form
    865,697.60/1,298,546.40 = 533,460.80/x
  3. Step 3: Cross multiply
    865,697.60x = 1,298,546.40 × 533,460.80
  4. Step 4: Simplify right side
    865,697.60x = 692,723,601,381.12
  5. Step 5: Solve for x
    x = 692,723,601,381.12/865,697.60
  6. Step 6: Final answer
    x = 800,191.20

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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.