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Finding the Fourth Proportional to 666,139.26, 919,272.16 and 364,333.26

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Solution

The fourth proportional to 666,139.26, 919,272.16 and 364,333.26 is: 502,779.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,139.26 : 919,272.16 = 364,333.26 : x
  2. Step 2: Convert to fraction form
    666,139.26/919,272.16 = 364,333.26/x
  3. Step 3: Cross multiply
    666,139.26x = 919,272.16 × 364,333.26
  4. Step 4: Simplify right side
    666,139.26x = 334,921,422,880.04
  5. Step 5: Solve for x
    x = 334,921,422,880.04/666,139.26
  6. Step 6: Final answer
    x = 502,779.89

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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.