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Finding the Fourth Proportional to 562,680.25, 776,498.78 and 308,031.43

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Solution

The fourth proportional to 562,680.25, 776,498.78 and 308,031.43 is: 425,083.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,680.25 : 776,498.78 = 308,031.43 : x
  2. Step 2: Convert to fraction form
    562,680.25/776,498.78 = 308,031.43/x
  3. Step 3: Cross multiply
    562,680.25x = 776,498.78 × 308,031.43
  4. Step 4: Simplify right side
    562,680.25x = 239,186,029,596.66
  5. Step 5: Solve for x
    x = 239,186,029,596.66/562,680.25
  6. Step 6: Final answer
    x = 425,083.39

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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.