Home / 1,986,021.40-2,976,699.30-918,809.14

Finding the Fourth Proportional to 1,986,021.40, 2,976,699.30 and 918,809.14

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Solution

The fourth proportional to 1,986,021.40, 2,976,699.30 and 918,809.14 is: 1,377,134.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,021.40 : 2,976,699.30 = 918,809.14 : x
  2. Step 2: Convert to fraction form
    1,986,021.40/2,976,699.30 = 918,809.14/x
  3. Step 3: Cross multiply
    1,986,021.40x = 2,976,699.30 × 918,809.14
  4. Step 4: Simplify right side
    1,986,021.40x = 2,735,018,523,871.60
  5. Step 5: Solve for x
    x = 2,735,018,523,871.60/1,986,021.40
  6. Step 6: Final answer
    x = 1,377,134.47

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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.