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Finding the Fourth Proportional to 717,169.07, 989,729.69 and 407,093.48

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Solution

The fourth proportional to 717,169.07, 989,729.69 and 407,093.48 is: 561,809.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,169.07 : 989,729.69 = 407,093.48 : x
  2. Step 2: Convert to fraction form
    717,169.07/989,729.69 = 407,093.48/x
  3. Step 3: Cross multiply
    717,169.07x = 989,729.69 × 407,093.48
  4. Step 4: Simplify right side
    717,169.07x = 402,912,500,488.79
  5. Step 5: Solve for x
    x = 402,912,500,488.79/717,169.07
  6. Step 6: Final answer
    x = 561,809.64

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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.