Home / 986,232.80-1,479,349.20-912,421.55

Finding the Fourth Proportional to 986,232.80, 1,479,349.20 and 912,421.55

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Solution

The fourth proportional to 986,232.80, 1,479,349.20 and 912,421.55 is: 1,368,632.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,232.80 : 1,479,349.20 = 912,421.55 : x
  2. Step 2: Convert to fraction form
    986,232.80/1,479,349.20 = 912,421.55/x
  3. Step 3: Cross multiply
    986,232.80x = 1,479,349.20 × 912,421.55
  4. Step 4: Simplify right side
    986,232.80x = 1,349,790,090,055.26
  5. Step 5: Solve for x
    x = 1,349,790,090,055.26/986,232.80
  6. Step 6: Final answer
    x = 1,368,632.33

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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.