Home / 785,109.20-1,177,663.80-724,456.40

Finding the Fourth Proportional to 785,109.20, 1,177,663.80 and 724,456.40

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Solution

The fourth proportional to 785,109.20, 1,177,663.80 and 724,456.40 is: 1,086,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,109.20 : 1,177,663.80 = 724,456.40 : x
  2. Step 2: Convert to fraction form
    785,109.20/1,177,663.80 = 724,456.40/x
  3. Step 3: Cross multiply
    785,109.20x = 1,177,663.80 × 724,456.40
  4. Step 4: Simplify right side
    785,109.20x = 853,166,076,958.32
  5. Step 5: Solve for x
    x = 853,166,076,958.32/785,109.20
  6. Step 6: Final answer
    x = 1,086,684.60

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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.