Home / 1,425,081.80-1,966,539.20-780,377.60

Finding the Fourth Proportional to 1,425,081.80, 1,966,539.20 and 780,377.60

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Solution

The fourth proportional to 1,425,081.80, 1,966,539.20 and 780,377.60 is: 1,076,880.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,081.80 : 1,966,539.20 = 780,377.60 : x
  2. Step 2: Convert to fraction form
    1,425,081.80/1,966,539.20 = 780,377.60/x
  3. Step 3: Cross multiply
    1,425,081.80x = 1,966,539.20 × 780,377.60
  4. Step 4: Simplify right side
    1,425,081.80x = 1,534,643,141,201.92
  5. Step 5: Solve for x
    x = 1,534,643,141,201.92/1,425,081.80
  6. Step 6: Final answer
    x = 1,076,880.74

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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.