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Finding the Fourth Proportional to 551,444.05, 760,995.84 and 309,726.64

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Solution

The fourth proportional to 551,444.05, 760,995.84 and 309,726.64 is: 427,424.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,444.05 : 760,995.84 = 309,726.64 : x
  2. Step 2: Convert to fraction form
    551,444.05/760,995.84 = 309,726.64/x
  3. Step 3: Cross multiply
    551,444.05x = 760,995.84 × 309,726.64
  4. Step 4: Simplify right side
    551,444.05x = 235,700,684,577.18
  5. Step 5: Solve for x
    x = 235,700,684,577.18/551,444.05
  6. Step 6: Final answer
    x = 427,424.48

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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.