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Finding the Fourth Proportional to 666,297.59, 919,487.88 and 360,374.28

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Solution

The fourth proportional to 666,297.59, 919,487.88 and 360,374.28 is: 497,315.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,297.59 : 919,487.88 = 360,374.28 : x
  2. Step 2: Convert to fraction form
    666,297.59/919,487.88 = 360,374.28/x
  3. Step 3: Cross multiply
    666,297.59x = 919,487.88 × 360,374.28
  4. Step 4: Simplify right side
    666,297.59x = 331,359,782,723.73
  5. Step 5: Solve for x
    x = 331,359,782,723.73/666,297.59
  6. Step 6: Final answer
    x = 497,315.00

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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.