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Finding the Fourth Proportional to 666,875.25, 920,287.89 and 365,069.25

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Solution

The fourth proportional to 666,875.25, 920,287.89 and 365,069.25 is: 503,795.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,875.25 : 920,287.89 = 365,069.25 : x
  2. Step 2: Convert to fraction form
    666,875.25/920,287.89 = 365,069.25/x
  3. Step 3: Cross multiply
    666,875.25x = 920,287.89 × 365,069.25
  4. Step 4: Simplify right side
    666,875.25x = 335,968,809,786.38
  5. Step 5: Solve for x
    x = 335,968,809,786.38/666,875.25
  6. Step 6: Final answer
    x = 503,795.59

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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.