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Finding the Fourth Proportional to 710,579.75, 980,558.91 and 388,292.49

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Solution

The fourth proportional to 710,579.75, 980,558.91 and 388,292.49 is: 535,821.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,579.75 : 980,558.91 = 388,292.49 : x
  2. Step 2: Convert to fraction form
    710,579.75/980,558.91 = 388,292.49/x
  3. Step 3: Cross multiply
    710,579.75x = 980,558.91 × 388,292.49
  4. Step 4: Simplify right side
    710,579.75x = 380,743,660,755.59
  5. Step 5: Solve for x
    x = 380,743,660,755.59/710,579.75
  6. Step 6: Final answer
    x = 535,821.16

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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.