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Finding the Fourth Proportional to 666,758.68, 920,119.80 and 360,828.29

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Solution

The fourth proportional to 666,758.68, 920,119.80 and 360,828.29 is: 497,939.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,758.68 : 920,119.80 = 360,828.29 : x
  2. Step 2: Convert to fraction form
    666,758.68/920,119.80 = 360,828.29/x
  3. Step 3: Cross multiply
    666,758.68x = 920,119.80 × 360,828.29
  4. Step 4: Simplify right side
    666,758.68x = 332,005,256,329.44
  5. Step 5: Solve for x
    x = 332,005,256,329.44/666,758.68
  6. Step 6: Final answer
    x = 497,939.16

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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.