Home / 774,262.89-1,161,555.99-390,227.58

Finding the Fourth Proportional to 774,262.89, 1,161,555.99 and 390,227.58

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Solution

The fourth proportional to 774,262.89, 1,161,555.99 and 390,227.58 is: 585,422.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,262.89 : 1,161,555.99 = 390,227.58 : x
  2. Step 2: Convert to fraction form
    774,262.89/1,161,555.99 = 390,227.58/x
  3. Step 3: Cross multiply
    774,262.89x = 1,161,555.99 × 390,227.58
  4. Step 4: Simplify right side
    774,262.89x = 453,271,183,012.20
  5. Step 5: Solve for x
    x = 453,271,183,012.20/774,262.89
  6. Step 6: Final answer
    x = 585,422.84

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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.