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Finding the Fourth Proportional to 790,556.15, 1,090,970.96 and 427,980

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Solution

The fourth proportional to 790,556.15, 1,090,970.96 and 427,980 is: 590,614.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,556.15 : 1,090,970.96 = 427,980 : x
  2. Step 2: Convert to fraction form
    790,556.15/1,090,970.96 = 427,980/x
  3. Step 3: Cross multiply
    790,556.15x = 1,090,970.96 × 427,980
  4. Step 4: Simplify right side
    790,556.15x = 466,913,751,460.80
  5. Step 5: Solve for x
    x = 466,913,751,460.80/790,556.15
  6. Step 6: Final answer
    x = 590,614.28

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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.