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Finding the Fourth Proportional to 760,791.83, 1,049,879.90 and 421,252.79

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Solution

The fourth proportional to 760,791.83, 1,049,879.90 and 421,252.79 is: 581,321.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,791.83 : 1,049,879.90 = 421,252.79 : x
  2. Step 2: Convert to fraction form
    760,791.83/1,049,879.90 = 421,252.79/x
  3. Step 3: Cross multiply
    760,791.83x = 1,049,879.90 × 421,252.79
  4. Step 4: Simplify right side
    760,791.83x = 442,264,834,933.66
  5. Step 5: Solve for x
    x = 442,264,834,933.66/760,791.83
  6. Step 6: Final answer
    x = 581,321.75

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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.