Home / 1,290,168.24-1,780,477.88-709,435.60

Finding the Fourth Proportional to 1,290,168.24, 1,780,477.88 and 709,435.60

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Solution

The fourth proportional to 1,290,168.24, 1,780,477.88 and 709,435.60 is: 979,046.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,168.24 : 1,780,477.88 = 709,435.60 : x
  2. Step 2: Convert to fraction form
    1,290,168.24/1,780,477.88 = 709,435.60/x
  3. Step 3: Cross multiply
    1,290,168.24x = 1,780,477.88 × 709,435.60
  4. Step 4: Simplify right side
    1,290,168.24x = 1,263,134,393,084.53
  5. Step 5: Solve for x
    x = 1,263,134,393,084.53/1,290,168.24
  6. Step 6: Final answer
    x = 979,046.26

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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.