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Finding the Fourth Proportional to 870,046.70, 1,200,808.84 and 507,470.56

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Solution

The fourth proportional to 870,046.70, 1,200,808.84 and 507,470.56 is: 700,393.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,046.70 : 1,200,808.84 = 507,470.56 : x
  2. Step 2: Convert to fraction form
    870,046.70/1,200,808.84 = 507,470.56/x
  3. Step 3: Cross multiply
    870,046.70x = 1,200,808.84 × 507,470.56
  4. Step 4: Simplify right side
    870,046.70x = 609,375,132,315.48
  5. Step 5: Solve for x
    x = 609,375,132,315.48/870,046.70
  6. Step 6: Final answer
    x = 700,393.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.