Home / 870,409.60-1,305,614.40-571,811.20

Finding the Fourth Proportional to 870,409.60, 1,305,614.40 and 571,811.20

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Solution

The fourth proportional to 870,409.60, 1,305,614.40 and 571,811.20 is: 857,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,409.60 : 1,305,614.40 = 571,811.20 : x
  2. Step 2: Convert to fraction form
    870,409.60/1,305,614.40 = 571,811.20/x
  3. Step 3: Cross multiply
    870,409.60x = 1,305,614.40 × 571,811.20
  4. Step 4: Simplify right side
    870,409.60x = 746,564,936,801.28
  5. Step 5: Solve for x
    x = 746,564,936,801.28/870,409.60
  6. Step 6: Final answer
    x = 857,716.80

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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.