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Finding the Fourth Proportional to 986,280.30, 1,479,311.10 and 808,477.20

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Solution

The fourth proportional to 986,280.30, 1,479,311.10 and 808,477.20 is: 1,212,626.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,280.30 : 1,479,311.10 = 808,477.20 : x
  2. Step 2: Convert to fraction form
    986,280.30/1,479,311.10 = 808,477.20/x
  3. Step 3: Cross multiply
    986,280.30x = 1,479,311.10 × 808,477.20
  4. Step 4: Simplify right side
    986,280.30x = 1,195,989,296,056.92
  5. Step 5: Solve for x
    x = 1,195,989,296,056.92/986,280.30
  6. Step 6: Final answer
    x = 1,212,626.16

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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.