Home / 1,489,813.20-2,235,643.20-780,350.40

Finding the Fourth Proportional to 1,489,813.20, 2,235,643.20 and 780,350.40

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Solution

The fourth proportional to 1,489,813.20, 2,235,643.20 and 780,350.40 is: 1,171,009.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489,813.20 : 2,235,643.20 = 780,350.40 : x
  2. Step 2: Convert to fraction form
    1,489,813.20/2,235,643.20 = 780,350.40/x
  3. Step 3: Cross multiply
    1,489,813.20x = 2,235,643.20 × 780,350.40
  4. Step 4: Simplify right side
    1,489,813.20x = 1,744,585,065,377.28
  5. Step 5: Solve for x
    x = 1,744,585,065,377.28/1,489,813.20
  6. Step 6: Final answer
    x = 1,171,009.27

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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.