Home / 1,100,071.80-1,650,399.30-390,025.80

Finding the Fourth Proportional to 1,100,071.80, 1,650,399.30 and 390,025.80

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Solution

The fourth proportional to 1,100,071.80, 1,650,399.30 and 390,025.80 is: 585,142.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100,071.80 : 1,650,399.30 = 390,025.80 : x
  2. Step 2: Convert to fraction form
    1,100,071.80/1,650,399.30 = 390,025.80/x
  3. Step 3: Cross multiply
    1,100,071.80x = 1,650,399.30 × 390,025.80
  4. Step 4: Simplify right side
    1,100,071.80x = 643,698,307,301.94
  5. Step 5: Solve for x
    x = 643,698,307,301.94/1,100,071.80
  6. Step 6: Final answer
    x = 585,142.09

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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.