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Finding the Fourth Proportional to 557,015.76, 765,726.06 and 479,207.16

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Solution

The fourth proportional to 557,015.76, 765,726.06 and 479,207.16 is: 658,763.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,015.76 : 765,726.06 = 479,207.16 : x
  2. Step 2: Convert to fraction form
    557,015.76/765,726.06 = 479,207.16/x
  3. Step 3: Cross multiply
    557,015.76x = 765,726.06 × 479,207.16
  4. Step 4: Simplify right side
    557,015.76x = 366,941,410,550.59
  5. Step 5: Solve for x
    x = 366,941,410,550.59/557,015.76
  6. Step 6: Final answer
    x = 658,763.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.