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Finding the Fourth Proportional to 717,368.75, 989,930.91 and 411,429.41

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Solution

The fourth proportional to 717,368.75, 989,930.91 and 411,429.41 is: 567,750.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,368.75 : 989,930.91 = 411,429.41 : x
  2. Step 2: Convert to fraction form
    717,368.75/989,930.91 = 411,429.41/x
  3. Step 3: Cross multiply
    717,368.75x = 989,930.91 × 411,429.41
  4. Step 4: Simplify right side
    717,368.75x = 407,286,685,292.41
  5. Step 5: Solve for x
    x = 407,286,685,292.41/717,368.75
  6. Step 6: Final answer
    x = 567,750.81

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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.