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Finding the Fourth Proportional to 666,289.29, 919,476.50 and 360,366.03

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Solution

The fourth proportional to 666,289.29, 919,476.50 and 360,366.03 is: 497,303.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,289.29 : 919,476.50 = 360,366.03 : x
  2. Step 2: Convert to fraction form
    666,289.29/919,476.50 = 360,366.03/x
  3. Step 3: Cross multiply
    666,289.29x = 919,476.50 × 360,366.03
  4. Step 4: Simplify right side
    666,289.29x = 331,348,094,181.47
  5. Step 5: Solve for x
    x = 331,348,094,181.47/666,289.29
  6. Step 6: Final answer
    x = 497,303.64

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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.