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Finding the Fourth Proportional to 552,647.20, 828,970.80 and 487,328.80

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Solution

The fourth proportional to 552,647.20, 828,970.80 and 487,328.80 is: 730,993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,647.20 : 828,970.80 = 487,328.80 : x
  2. Step 2: Convert to fraction form
    552,647.20/828,970.80 = 487,328.80/x
  3. Step 3: Cross multiply
    552,647.20x = 828,970.80 × 487,328.80
  4. Step 4: Simplify right side
    552,647.20x = 403,981,345,199.04
  5. Step 5: Solve for x
    x = 403,981,345,199.04/552,647.20
  6. Step 6: Final answer
    x = 730,993.20

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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.