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Finding the Fourth Proportional to 870,687.90, 1,302,652.62 and 763,263.63

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Solution

The fourth proportional to 870,687.90, 1,302,652.62 and 763,263.63 is: 1,141,933.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,687.90 : 1,302,652.62 = 763,263.63 : x
  2. Step 2: Convert to fraction form
    870,687.90/1,302,652.62 = 763,263.63/x
  3. Step 3: Cross multiply
    870,687.90x = 1,302,652.62 × 763,263.63
  4. Step 4: Simplify right side
    870,687.90x = 994,267,367,370.21
  5. Step 5: Solve for x
    x = 994,267,367,370.21/870,687.90
  6. Step 6: Final answer
    x = 1,141,933.14

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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.