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Finding the Fourth Proportional to 828,347.62, 1,240,700.12 and 684,563.30

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Solution

The fourth proportional to 828,347.62, 1,240,700.12 and 684,563.30 is: 1,025,339.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,347.62 : 1,240,700.12 = 684,563.30 : x
  2. Step 2: Convert to fraction form
    828,347.62/1,240,700.12 = 684,563.30/x
  3. Step 3: Cross multiply
    828,347.62x = 1,240,700.12 × 684,563.30
  4. Step 4: Simplify right side
    828,347.62x = 849,337,768,457.60
  5. Step 5: Solve for x
    x = 849,337,768,457.60/828,347.62
  6. Step 6: Final answer
    x = 1,025,339.78

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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.