Home / 788,726.88-1,088,443.12-449,226.72

Finding the Fourth Proportional to 788,726.88, 1,088,443.12 and 449,226.72

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Solution

The fourth proportional to 788,726.88, 1,088,443.12 and 449,226.72 is: 619,932.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,726.88 : 1,088,443.12 = 449,226.72 : x
  2. Step 2: Convert to fraction form
    788,726.88/1,088,443.12 = 449,226.72/x
  3. Step 3: Cross multiply
    788,726.88x = 1,088,443.12 × 449,226.72
  4. Step 4: Simplify right side
    788,726.88x = 488,957,732,704.17
  5. Step 5: Solve for x
    x = 488,957,732,704.17/788,726.88
  6. Step 6: Final answer
    x = 619,932.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.