Home / 774,259.89-1,161,551.49-390,224.58

Finding the Fourth Proportional to 774,259.89, 1,161,551.49 and 390,224.58

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Solution

The fourth proportional to 774,259.89, 1,161,551.49 and 390,224.58 is: 585,418.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,259.89 : 1,161,551.49 = 390,224.58 : x
  2. Step 2: Convert to fraction form
    774,259.89/1,161,551.49 = 390,224.58/x
  3. Step 3: Cross multiply
    774,259.89x = 1,161,551.49 × 390,224.58
  4. Step 4: Simplify right side
    774,259.89x = 453,265,942,333.62
  5. Step 5: Solve for x
    x = 453,265,942,333.62/774,259.89
  6. Step 6: Final answer
    x = 585,418.34

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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.