Home / 1,187,979.40-1,783,489.74-1,020,570.76

Finding the Fourth Proportional to 1,187,979.40, 1,783,489.74 and 1,020,570.76

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Solution

The fourth proportional to 1,187,979.40, 1,783,489.74 and 1,020,570.76 is: 1,532,162.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,979.40 : 1,783,489.74 = 1,020,570.76 : x
  2. Step 2: Convert to fraction form
    1,187,979.40/1,783,489.74 = 1,020,570.76/x
  3. Step 3: Cross multiply
    1,187,979.40x = 1,783,489.74 × 1,020,570.76
  4. Step 4: Simplify right side
    1,187,979.40x = 1,820,177,479,404.00
  5. Step 5: Solve for x
    x = 1,820,177,479,404.00/1,187,979.40
  6. Step 6: Final answer
    x = 1,532,162.49

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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.