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Finding the Fourth Proportional to 666,283.50, 919,471.23 and 360,359.91

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Solution

The fourth proportional to 666,283.50, 919,471.23 and 360,359.91 is: 497,296.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,283.50 : 919,471.23 = 360,359.91 : x
  2. Step 2: Convert to fraction form
    666,283.50/919,471.23 = 360,359.91/x
  3. Step 3: Cross multiply
    666,283.50x = 919,471.23 × 360,359.91
  4. Step 4: Simplify right side
    666,283.50x = 331,340,569,690.39
  5. Step 5: Solve for x
    x = 331,340,569,690.39/666,283.50
  6. Step 6: Final answer
    x = 497,296.68

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1.5x scale

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.