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Finding the Fourth Proportional to 666,479.46, 919,737.81 and 360,554.91

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Solution

The fourth proportional to 666,479.46, 919,737.81 and 360,554.91 is: 497,563.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,479.46 : 919,737.81 = 360,554.91 : x
  2. Step 2: Convert to fraction form
    666,479.46/919,737.81 = 360,554.91/x
  3. Step 3: Cross multiply
    666,479.46x = 919,737.81 × 360,554.91
  4. Step 4: Simplify right side
    666,479.46x = 331,615,983,308.15
  5. Step 5: Solve for x
    x = 331,615,983,308.15/666,479.46
  6. Step 6: Final answer
    x = 497,563.70

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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.