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Finding the Fourth Proportional to 551,005, 760,326.06 and 309,232.12

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Solution

The fourth proportional to 551,005, 760,326.06 and 309,232.12 is: 426,706.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,005 : 760,326.06 = 309,232.12 : x
  2. Step 2: Convert to fraction form
    551,005/760,326.06 = 309,232.12/x
  3. Step 3: Cross multiply
    551,005x = 760,326.06 × 309,232.12
  4. Step 4: Simplify right side
    551,005x = 235,117,239,425.05
  5. Step 5: Solve for x
    x = 235,117,239,425.05/551,005
  6. Step 6: Final answer
    x = 426,706.18

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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.