Home / 1,387,282.50-2,080,923.84-390,010.50

Finding the Fourth Proportional to 1,387,282.50, 2,080,923.84 and 390,010.50

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Solution

The fourth proportional to 1,387,282.50, 2,080,923.84 and 390,010.50 is: 585,015.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,282.50 : 2,080,923.84 = 390,010.50 : x
  2. Step 2: Convert to fraction form
    1,387,282.50/2,080,923.84 = 390,010.50/x
  3. Step 3: Cross multiply
    1,387,282.50x = 2,080,923.84 × 390,010.50
  4. Step 4: Simplify right side
    1,387,282.50x = 811,582,147,300.32
  5. Step 5: Solve for x
    x = 811,582,147,300.32/1,387,282.50
  6. Step 6: Final answer
    x = 585,015.78

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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.