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Finding the Fourth Proportional to 666,975.66, 920,424.51 and 365,167.50

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Solution

The fourth proportional to 666,975.66, 920,424.51 and 365,167.50 is: 503,930.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,975.66 : 920,424.51 = 365,167.50 : x
  2. Step 2: Convert to fraction form
    666,975.66/920,424.51 = 365,167.50/x
  3. Step 3: Cross multiply
    666,975.66x = 920,424.51 × 365,167.50
  4. Step 4: Simplify right side
    666,975.66x = 336,109,117,255.43
  5. Step 5: Solve for x
    x = 336,109,117,255.43/666,975.66
  6. Step 6: Final answer
    x = 503,930.11

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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.