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Finding the Fourth Proportional to 644,759.21, 889,727.01 and 358,262.21

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Solution

The fourth proportional to 644,759.21, 889,727.01 and 358,262.21 is: 494,379.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,759.21 : 889,727.01 = 358,262.21 : x
  2. Step 2: Convert to fraction form
    644,759.21/889,727.01 = 358,262.21/x
  3. Step 3: Cross multiply
    644,759.21x = 889,727.01 × 358,262.21
  4. Step 4: Simplify right side
    644,759.21x = 318,755,564,899.29
  5. Step 5: Solve for x
    x = 318,755,564,899.29/644,759.21
  6. Step 6: Final answer
    x = 494,379.23

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1.5x scale

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.