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Finding the Fourth Proportional to 818,018.51, 1,226,880 and 285,691.77

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Solution

The fourth proportional to 818,018.51, 1,226,880 and 285,691.77 is: 428,486.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,018.51 : 1,226,880 = 285,691.77 : x
  2. Step 2: Convert to fraction form
    818,018.51/1,226,880 = 285,691.77/x
  3. Step 3: Cross multiply
    818,018.51x = 1,226,880 × 285,691.77
  4. Step 4: Simplify right side
    818,018.51x = 350,509,518,777.60
  5. Step 5: Solve for x
    x = 350,509,518,777.60/818,018.51
  6. Step 6: Final answer
    x = 428,486.05

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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.