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Finding the Fourth Proportional to 562,512.76, 776,287.39 and 307,863.88

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Solution

The fourth proportional to 562,512.76, 776,287.39 and 307,863.88 is: 424,862.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,512.76 : 776,287.39 = 307,863.88 : x
  2. Step 2: Convert to fraction form
    562,512.76/776,287.39 = 307,863.88/x
  3. Step 3: Cross multiply
    562,512.76x = 776,287.39 × 307,863.88
  4. Step 4: Simplify right side
    562,512.76x = 238,990,847,880.47
  5. Step 5: Solve for x
    x = 238,990,847,880.47/562,512.76
  6. Step 6: Final answer
    x = 424,862.98

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Double scale
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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.