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Finding the Fourth Proportional to 529,718.40, 795,499.20 and 280,886.40

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Solution

The fourth proportional to 529,718.40, 795,499.20 and 280,886.40 is: 421,818.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,718.40 : 795,499.20 = 280,886.40 : x
  2. Step 2: Convert to fraction form
    529,718.40/795,499.20 = 280,886.40/x
  3. Step 3: Cross multiply
    529,718.40x = 795,499.20 × 280,886.40
  4. Step 4: Simplify right side
    529,718.40x = 223,444,906,490.88
  5. Step 5: Solve for x
    x = 223,444,906,490.88/529,718.40
  6. Step 6: Final answer
    x = 421,818.28

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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.