Home / 1,190,047.28-1,785,128.31-391,311.14

Finding the Fourth Proportional to 1,190,047.28, 1,785,128.31 and 391,311.14

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Solution

The fourth proportional to 1,190,047.28, 1,785,128.31 and 391,311.14 is: 586,985.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,047.28 : 1,785,128.31 = 391,311.14 : x
  2. Step 2: Convert to fraction form
    1,190,047.28/1,785,128.31 = 391,311.14/x
  3. Step 3: Cross multiply
    1,190,047.28x = 1,785,128.31 × 391,311.14
  4. Step 4: Simplify right side
    1,190,047.28x = 698,540,594,032.37
  5. Step 5: Solve for x
    x = 698,540,594,032.37/1,190,047.28
  6. Step 6: Final answer
    x = 586,985.58

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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.