Home / 785,111.20-1,177,666.80-724,458.40

Finding the Fourth Proportional to 785,111.20, 1,177,666.80 and 724,458.40

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Solution

The fourth proportional to 785,111.20, 1,177,666.80 and 724,458.40 is: 1,086,687.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,111.20 : 1,177,666.80 = 724,458.40 : x
  2. Step 2: Convert to fraction form
    785,111.20/1,177,666.80 = 724,458.40/x
  3. Step 3: Cross multiply
    785,111.20x = 1,177,666.80 × 724,458.40
  4. Step 4: Simplify right side
    785,111.20x = 853,170,605,661.12
  5. Step 5: Solve for x
    x = 853,170,605,661.12/785,111.20
  6. Step 6: Final answer
    x = 1,086,687.60

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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.