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Finding the Fourth Proportional to 590,639.68, 814,799.08 and 386,600.68

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Solution

The fourth proportional to 590,639.68, 814,799.08 and 386,600.68 is: 533,323.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,639.68 : 814,799.08 = 386,600.68 : x
  2. Step 2: Convert to fraction form
    590,639.68/814,799.08 = 386,600.68/x
  3. Step 3: Cross multiply
    590,639.68x = 814,799.08 × 386,600.68
  4. Step 4: Simplify right side
    590,639.68x = 315,001,878,391.37
  5. Step 5: Solve for x
    x = 315,001,878,391.37/590,639.68
  6. Step 6: Final answer
    x = 533,323.26

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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.