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Finding the Fourth Proportional to 607,946.63, 911,938.46 and 208,581.80

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Solution

The fourth proportional to 607,946.63, 911,938.46 and 208,581.80 is: 312,879.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,946.63 : 911,938.46 = 208,581.80 : x
  2. Step 2: Convert to fraction form
    607,946.63/911,938.46 = 208,581.80/x
  3. Step 3: Cross multiply
    607,946.63x = 911,938.46 × 208,581.80
  4. Step 4: Simplify right side
    607,946.63x = 190,213,759,873.43
  5. Step 5: Solve for x
    x = 190,213,759,873.43/607,946.63
  6. Step 6: Final answer
    x = 312,879.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.