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Finding the Fourth Proportional to 723,959.88, 999,064.79 and 401,669.21

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Solution

The fourth proportional to 723,959.88, 999,064.79 and 401,669.21 is: 554,303.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,959.88 : 999,064.79 = 401,669.21 : x
  2. Step 2: Convert to fraction form
    723,959.88/999,064.79 = 401,669.21/x
  3. Step 3: Cross multiply
    723,959.88x = 999,064.79 × 401,669.21
  4. Step 4: Simplify right side
    723,959.88x = 401,293,565,108.70
  5. Step 5: Solve for x
    x = 401,293,565,108.70/723,959.88
  6. Step 6: Final answer
    x = 554,303.59

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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.