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Finding the Fourth Proportional to 666,464.46, 919,718.93 and 360,540.75

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Solution

The fourth proportional to 666,464.46, 919,718.93 and 360,540.75 is: 497,545.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,464.46 : 919,718.93 = 360,540.75 : x
  2. Step 2: Convert to fraction form
    666,464.46/919,718.93 = 360,540.75/x
  3. Step 3: Cross multiply
    666,464.46x = 919,718.93 × 360,540.75
  4. Step 4: Simplify right side
    666,464.46x = 331,596,152,811.40
  5. Step 5: Solve for x
    x = 331,596,152,811.40/666,464.46
  6. Step 6: Final answer
    x = 497,545.14

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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.