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Finding the Fourth Proportional to 561,127.44, 774,355.86 and 306,479.23

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Solution

The fourth proportional to 561,127.44, 774,355.86 and 306,479.23 is: 422,941.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,127.44 : 774,355.86 = 306,479.23 : x
  2. Step 2: Convert to fraction form
    561,127.44/774,355.86 = 306,479.23/x
  3. Step 3: Cross multiply
    561,127.44x = 774,355.86 × 306,479.23
  4. Step 4: Simplify right side
    561,127.44x = 237,323,987,718.79
  5. Step 5: Solve for x
    x = 237,323,987,718.79/561,127.44
  6. Step 6: Final answer
    x = 422,941.33

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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.