Home / 780,140.40-1,169,335.80-400,914.60

Finding the Fourth Proportional to 780,140.40, 1,169,335.80 and 400,914.60

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Solution

The fourth proportional to 780,140.40, 1,169,335.80 and 400,914.60 is: 600,922.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,140.40 : 1,169,335.80 = 400,914.60 : x
  2. Step 2: Convert to fraction form
    780,140.40/1,169,335.80 = 400,914.60/x
  3. Step 3: Cross multiply
    780,140.40x = 1,169,335.80 × 400,914.60
  4. Step 4: Simplify right side
    780,140.40x = 468,803,794,522.68
  5. Step 5: Solve for x
    x = 468,803,794,522.68/780,140.40
  6. Step 6: Final answer
    x = 600,922.34

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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.