Home / 1,278,624-1,918,028.16-490,656

Finding the Fourth Proportional to 1,278,624, 1,918,028.16 and 490,656

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Solution

The fourth proportional to 1,278,624, 1,918,028.16 and 490,656 is: 736,019.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,624 : 1,918,028.16 = 490,656 : x
  2. Step 2: Convert to fraction form
    1,278,624/1,918,028.16 = 490,656/x
  3. Step 3: Cross multiply
    1,278,624x = 1,918,028.16 × 490,656
  4. Step 4: Simplify right side
    1,278,624x = 941,092,024,872.96
  5. Step 5: Solve for x
    x = 941,092,024,872.96/1,278,624
  6. Step 6: Final answer
    x = 736,019.37

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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.