Home / 1,439,362.46-2,159,043.42-428,499.20

Finding the Fourth Proportional to 1,439,362.46, 2,159,043.42 and 428,499.20

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Solution

The fourth proportional to 1,439,362.46, 2,159,043.42 and 428,499.20 is: 642,748.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,362.46 : 2,159,043.42 = 428,499.20 : x
  2. Step 2: Convert to fraction form
    1,439,362.46/2,159,043.42 = 428,499.20/x
  3. Step 3: Cross multiply
    1,439,362.46x = 2,159,043.42 × 428,499.20
  4. Step 4: Simplify right side
    1,439,362.46x = 925,148,378,235.26
  5. Step 5: Solve for x
    x = 925,148,378,235.26/1,439,362.46
  6. Step 6: Final answer
    x = 642,748.72

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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.