Home / 1,290,979.80-1,781,427.48-747,007.32

Finding the Fourth Proportional to 1,290,979.80, 1,781,427.48 and 747,007.32

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Solution

The fourth proportional to 1,290,979.80, 1,781,427.48 and 747,007.32 is: 1,030,797.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,979.80 : 1,781,427.48 = 747,007.32 : x
  2. Step 2: Convert to fraction form
    1,290,979.80/1,781,427.48 = 747,007.32/x
  3. Step 3: Cross multiply
    1,290,979.80x = 1,781,427.48 × 747,007.32
  4. Step 4: Simplify right side
    1,290,979.80x = 1,330,739,367,609.15
  5. Step 5: Solve for x
    x = 1,330,739,367,609.15/1,290,979.80
  6. Step 6: Final answer
    x = 1,030,797.98

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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.