Home / 985,708.80-1,478,563.20-670,780.80

Finding the Fourth Proportional to 985,708.80, 1,478,563.20 and 670,780.80

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Solution

The fourth proportional to 985,708.80, 1,478,563.20 and 670,780.80 is: 1,006,171.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,708.80 : 1,478,563.20 = 670,780.80 : x
  2. Step 2: Convert to fraction form
    985,708.80/1,478,563.20 = 670,780.80/x
  3. Step 3: Cross multiply
    985,708.80x = 1,478,563.20 × 670,780.80
  4. Step 4: Simplify right side
    985,708.80x = 991,791,806,146.56
  5. Step 5: Solve for x
    x = 991,791,806,146.56/985,708.80
  6. Step 6: Final answer
    x = 1,006,171.20

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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.