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Finding the Fourth Proportional to 828,346.62, 1,240,698.62 and 684,562.30

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Solution

The fourth proportional to 828,346.62, 1,240,698.62 and 684,562.30 is: 1,025,338.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,346.62 : 1,240,698.62 = 684,562.30 : x
  2. Step 2: Convert to fraction form
    828,346.62/1,240,698.62 = 684,562.30/x
  3. Step 3: Cross multiply
    828,346.62x = 1,240,698.62 × 684,562.30
  4. Step 4: Simplify right side
    828,346.62x = 849,335,500,914.03
  5. Step 5: Solve for x
    x = 849,335,500,914.03/828,346.62
  6. Step 6: Final answer
    x = 1,025,338.28

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Double scale
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1.5x scale

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.