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Finding the Fourth Proportional to 562,619.72, 776,422.56 and 307,965.44

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Solution

The fourth proportional to 562,619.72, 776,422.56 and 307,965.44 is: 424,996.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,619.72 : 776,422.56 = 307,965.44 : x
  2. Step 2: Convert to fraction form
    562,619.72/776,422.56 = 307,965.44/x
  3. Step 3: Cross multiply
    562,619.72x = 776,422.56 × 307,965.44
  4. Step 4: Simplify right side
    562,619.72x = 239,111,315,316.33
  5. Step 5: Solve for x
    x = 239,111,315,316.33/562,619.72
  6. Step 6: Final answer
    x = 424,996.33

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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.