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Finding the Fourth Proportional to 666,296.08, 919,485.81 and 360,372.78

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Solution

The fourth proportional to 666,296.08, 919,485.81 and 360,372.78 is: 497,312.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,296.08 : 919,485.81 = 360,372.78 : x
  2. Step 2: Convert to fraction form
    666,296.08/919,485.81 = 360,372.78/x
  3. Step 3: Cross multiply
    666,296.08x = 919,485.81 × 360,372.78
  4. Step 4: Simplify right side
    666,296.08x = 331,357,657,520.25
  5. Step 5: Solve for x
    x = 331,357,657,520.25/666,296.08
  6. Step 6: Final answer
    x = 497,312.93

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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.