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Finding the Fourth Proportional to 666,064.50, 919,190.88 and 364,258.50

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Solution

The fourth proportional to 666,064.50, 919,190.88 and 364,258.50 is: 502,688.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,064.50 : 919,190.88 = 364,258.50 : x
  2. Step 2: Convert to fraction form
    666,064.50/919,190.88 = 364,258.50/x
  3. Step 3: Cross multiply
    666,064.50x = 919,190.88 × 364,258.50
  4. Step 4: Simplify right side
    666,064.50x = 334,823,091,162.48
  5. Step 5: Solve for x
    x = 334,823,091,162.48/666,064.50
  6. Step 6: Final answer
    x = 502,688.69

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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.