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Finding the Fourth Proportional to 459,612.88, 634,220.22 and 287,497.60

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Solution

The fourth proportional to 459,612.88, 634,220.22 and 287,497.60 is: 396,718.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,612.88 : 634,220.22 = 287,497.60 : x
  2. Step 2: Convert to fraction form
    459,612.88/634,220.22 = 287,497.60/x
  3. Step 3: Cross multiply
    459,612.88x = 634,220.22 × 287,497.60
  4. Step 4: Simplify right side
    459,612.88x = 182,336,791,121.47
  5. Step 5: Solve for x
    x = 182,336,791,121.47/459,612.88
  6. Step 6: Final answer
    x = 396,718.19

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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.