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Finding the Fourth Proportional to 870,216.48, 1,305,296.01 and 357,863.88

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Solution

The fourth proportional to 870,216.48, 1,305,296.01 and 357,863.88 is: 536,784.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,216.48 : 1,305,296.01 = 357,863.88 : x
  2. Step 2: Convert to fraction form
    870,216.48/1,305,296.01 = 357,863.88/x
  3. Step 3: Cross multiply
    870,216.48x = 1,305,296.01 × 357,863.88
  4. Step 4: Simplify right side
    870,216.48x = 467,118,294,687.12
  5. Step 5: Solve for x
    x = 467,118,294,687.12/870,216.48
  6. Step 6: Final answer
    x = 536,784.01

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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.