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Finding the Fourth Proportional to 551,127.31, 760,599.62 and 309,425.74

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Solution

The fourth proportional to 551,127.31, 760,599.62 and 309,425.74 is: 427,032.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,127.31 : 760,599.62 = 309,425.74 : x
  2. Step 2: Convert to fraction form
    551,127.31/760,599.62 = 309,425.74/x
  3. Step 3: Cross multiply
    551,127.31x = 760,599.62 × 309,425.74
  4. Step 4: Simplify right side
    551,127.31x = 235,349,097,973.94
  5. Step 5: Solve for x
    x = 235,349,097,973.94/551,127.31
  6. Step 6: Final answer
    x = 427,032.18

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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.