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Finding the Fourth Proportional to 551,227.36, 760,684.08 and 309,511.84

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Solution

The fourth proportional to 551,227.36, 760,684.08 and 309,511.84 is: 427,120.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,227.36 : 760,684.08 = 309,511.84 : x
  2. Step 2: Convert to fraction form
    551,227.36/760,684.08 = 309,511.84/x
  3. Step 3: Cross multiply
    551,227.36x = 760,684.08 × 309,511.84
  4. Step 4: Simplify right side
    551,227.36x = 235,440,729,259.51
  5. Step 5: Solve for x
    x = 235,440,729,259.51/551,227.36
  6. Step 6: Final answer
    x = 427,120.91

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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.