Home / 1,109,817.22-1,664,801.05-390,071.42

Finding the Fourth Proportional to 1,109,817.22, 1,664,801.05 and 390,071.42

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Solution

The fourth proportional to 1,109,817.22, 1,664,801.05 and 390,071.42 is: 585,133.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,817.22 : 1,664,801.05 = 390,071.42 : x
  2. Step 2: Convert to fraction form
    1,109,817.22/1,664,801.05 = 390,071.42/x
  3. Step 3: Cross multiply
    1,109,817.22x = 1,664,801.05 × 390,071.42
  4. Step 4: Simplify right side
    1,109,817.22x = 649,391,311,948.45
  5. Step 5: Solve for x
    x = 649,391,311,948.45/1,109,817.22
  6. Step 6: Final answer
    x = 585,133.57

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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.