Home / 1,203,619.40-1,805,429.10-778,466.60

Finding the Fourth Proportional to 1,203,619.40, 1,805,429.10 and 778,466.60

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Solution

The fourth proportional to 1,203,619.40, 1,805,429.10 and 778,466.60 is: 1,167,699.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,619.40 : 1,805,429.10 = 778,466.60 : x
  2. Step 2: Convert to fraction form
    1,203,619.40/1,805,429.10 = 778,466.60/x
  3. Step 3: Cross multiply
    1,203,619.40x = 1,805,429.10 × 778,466.60
  4. Step 4: Simplify right side
    1,203,619.40x = 1,405,466,253,018.06
  5. Step 5: Solve for x
    x = 1,405,466,253,018.06/1,203,619.40
  6. Step 6: Final answer
    x = 1,167,699.90

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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.