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Finding the Fourth Proportional to 551,435.16, 760,926.78 and 309,662.76

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Solution

The fourth proportional to 551,435.16, 760,926.78 and 309,662.76 is: 427,304.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,435.16 : 760,926.78 = 309,662.76 : x
  2. Step 2: Convert to fraction form
    551,435.16/760,926.78 = 309,662.76/x
  3. Step 3: Cross multiply
    551,435.16x = 760,926.78 × 309,662.76
  4. Step 4: Simplify right side
    551,435.16x = 235,630,686,852.71
  5. Step 5: Solve for x
    x = 235,630,686,852.71/551,435.16
  6. Step 6: Final answer
    x = 427,304.43

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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.