Home / 1,380,693.60-1,905,353.28-777,081.60

Finding the Fourth Proportional to 1,380,693.60, 1,905,353.28 and 777,081.60

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Solution

The fourth proportional to 1,380,693.60, 1,905,353.28 and 777,081.60 is: 1,072,370.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,693.60 : 1,905,353.28 = 777,081.60 : x
  2. Step 2: Convert to fraction form
    1,380,693.60/1,905,353.28 = 777,081.60/x
  3. Step 3: Cross multiply
    1,380,693.60x = 1,905,353.28 × 777,081.60
  4. Step 4: Simplify right side
    1,380,693.60x = 1,480,614,975,387.65
  5. Step 5: Solve for x
    x = 1,480,614,975,387.65/1,380,693.60
  6. Step 6: Final answer
    x = 1,072,370.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.