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Finding the Fourth Proportional to 666,939.34, 920,376.30 and 365,133.34

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Solution

The fourth proportional to 666,939.34, 920,376.30 and 365,133.34 is: 503,884.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,939.34 : 920,376.30 = 365,133.34 : x
  2. Step 2: Convert to fraction form
    666,939.34/920,376.30 = 365,133.34/x
  3. Step 3: Cross multiply
    666,939.34x = 920,376.30 × 365,133.34
  4. Step 4: Simplify right side
    666,939.34x = 336,060,072,475.84
  5. Step 5: Solve for x
    x = 336,060,072,475.84/666,939.34
  6. Step 6: Final answer
    x = 503,884.02

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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.