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Finding the Fourth Proportional to 554,759.79, 765,561.03 and 309,748.32

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Solution

The fourth proportional to 554,759.79, 765,561.03 and 309,748.32 is: 427,448.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,759.79 : 765,561.03 = 309,748.32 : x
  2. Step 2: Convert to fraction form
    554,759.79/765,561.03 = 309,748.32/x
  3. Step 3: Cross multiply
    554,759.79x = 765,561.03 × 309,748.32
  4. Step 4: Simplify right side
    554,759.79x = 237,131,242,899.97
  5. Step 5: Solve for x
    x = 237,131,242,899.97/554,759.79
  6. Step 6: Final answer
    x = 427,448.51

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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.