Home / 1,490,006.80-2,235,010.20-890,659.45

Finding the Fourth Proportional to 1,490,006.80, 2,235,010.20 and 890,659.45

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Solution

The fourth proportional to 1,490,006.80, 2,235,010.20 and 890,659.45 is: 1,335,989.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,006.80 : 2,235,010.20 = 890,659.45 : x
  2. Step 2: Convert to fraction form
    1,490,006.80/2,235,010.20 = 890,659.45/x
  3. Step 3: Cross multiply
    1,490,006.80x = 2,235,010.20 × 890,659.45
  4. Step 4: Simplify right side
    1,490,006.80x = 1,990,632,955,476.39
  5. Step 5: Solve for x
    x = 1,990,632,955,476.39/1,490,006.80
  6. Step 6: Final answer
    x = 1,335,989.18

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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.