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Finding the Fourth Proportional to 666,974.16, 920,422.44 and 365,166

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Solution

The fourth proportional to 666,974.16, 920,422.44 and 365,166 is: 503,928.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,974.16 : 920,422.44 = 365,166 : x
  2. Step 2: Convert to fraction form
    666,974.16/920,422.44 = 365,166/x
  3. Step 3: Cross multiply
    666,974.16x = 920,422.44 × 365,166
  4. Step 4: Simplify right side
    666,974.16x = 336,106,980,725.04
  5. Step 5: Solve for x
    x = 336,106,980,725.04/666,974.16
  6. Step 6: Final answer
    x = 503,928.04

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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.