Home / 1,228,479.12-1,842,981.09-429,786.72

Finding the Fourth Proportional to 1,228,479.12, 1,842,981.09 and 429,786.72

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Solution

The fourth proportional to 1,228,479.12, 1,842,981.09 and 429,786.72 is: 644,771.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,479.12 : 1,842,981.09 = 429,786.72 : x
  2. Step 2: Convert to fraction form
    1,228,479.12/1,842,981.09 = 429,786.72/x
  3. Step 3: Cross multiply
    1,228,479.12x = 1,842,981.09 × 429,786.72
  4. Step 4: Simplify right side
    1,228,479.12x = 792,088,797,693.13
  5. Step 5: Solve for x
    x = 792,088,797,693.13/1,228,479.12
  6. Step 6: Final answer
    x = 644,771.88

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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.