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Finding the Fourth Proportional to 717,164.70, 989,690.90 and 411,252.60

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Solution

The fourth proportional to 717,164.70, 989,690.90 and 411,252.60 is: 567,530.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,164.70 : 989,690.90 = 411,252.60 : x
  2. Step 2: Convert to fraction form
    717,164.70/989,690.90 = 411,252.60/x
  3. Step 3: Cross multiply
    717,164.70x = 989,690.90 × 411,252.60
  4. Step 4: Simplify right side
    717,164.70x = 407,012,957,476.42
  5. Step 5: Solve for x
    x = 407,012,957,476.42/717,164.70
  6. Step 6: Final answer
    x = 567,530.67

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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.