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Finding the Fourth Proportional to 680,668.32, 937,296.48 and 665,563.98

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Solution

The fourth proportional to 680,668.32, 937,296.48 and 665,563.98 is: 916,497.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,668.32 : 937,296.48 = 665,563.98 : x
  2. Step 2: Convert to fraction form
    680,668.32/937,296.48 = 665,563.98/x
  3. Step 3: Cross multiply
    680,668.32x = 937,296.48 × 665,563.98
  4. Step 4: Simplify right side
    680,668.32x = 623,830,775,668.79
  5. Step 5: Solve for x
    x = 623,830,775,668.79/680,668.32
  6. Step 6: Final answer
    x = 916,497.44

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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.