Home / 859,810.35-1,289,744.21-386,497.11

Finding the Fourth Proportional to 859,810.35, 1,289,744.21 and 386,497.11

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Solution

The fourth proportional to 859,810.35, 1,289,744.21 and 386,497.11 is: 579,758.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,810.35 : 1,289,744.21 = 386,497.11 : x
  2. Step 2: Convert to fraction form
    859,810.35/1,289,744.21 = 386,497.11/x
  3. Step 3: Cross multiply
    859,810.35x = 1,289,744.21 × 386,497.11
  4. Step 4: Simplify right side
    859,810.35x = 498,482,409,804.23
  5. Step 5: Solve for x
    x = 498,482,409,804.23/859,810.35
  6. Step 6: Final answer
    x = 579,758.56

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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.