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Finding the Fourth Proportional to 590,886.60, 885,725.10 and 290,905.80

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Solution

The fourth proportional to 590,886.60, 885,725.10 and 290,905.80 is: 436,060.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,886.60 : 885,725.10 = 290,905.80 : x
  2. Step 2: Convert to fraction form
    590,886.60/885,725.10 = 290,905.80/x
  3. Step 3: Cross multiply
    590,886.60x = 885,725.10 × 290,905.80
  4. Step 4: Simplify right side
    590,886.60x = 257,662,568,795.58
  5. Step 5: Solve for x
    x = 257,662,568,795.58/590,886.60
  6. Step 6: Final answer
    x = 436,060.94

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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.