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Finding the Fourth Proportional to 554,806.77, 765,625.79 and 309,795.31

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Solution

The fourth proportional to 554,806.77, 765,625.79 and 309,795.31 is: 427,513.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,806.77 : 765,625.79 = 309,795.31 : x
  2. Step 2: Convert to fraction form
    554,806.77/765,625.79 = 309,795.31/x
  3. Step 3: Cross multiply
    554,806.77x = 765,625.79 × 309,795.31
  4. Step 4: Simplify right side
    554,806.77x = 237,187,277,408.07
  5. Step 5: Solve for x
    x = 237,187,277,408.07/554,806.77
  6. Step 6: Final answer
    x = 427,513.31

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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.