Home / 1,005,124.32-1,507,908.72-331,178.40

Finding the Fourth Proportional to 1,005,124.32, 1,507,908.72 and 331,178.40

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Solution

The fourth proportional to 1,005,124.32, 1,507,908.72 and 331,178.40 is: 496,840.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,124.32 : 1,507,908.72 = 331,178.40 : x
  2. Step 2: Convert to fraction form
    1,005,124.32/1,507,908.72 = 331,178.40/x
  3. Step 3: Cross multiply
    1,005,124.32x = 1,507,908.72 × 331,178.40
  4. Step 4: Simplify right side
    1,005,124.32x = 499,386,797,235.65
  5. Step 5: Solve for x
    x = 499,386,797,235.65/1,005,124.32
  6. Step 6: Final answer
    x = 496,840.83

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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.