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Finding the Fourth Proportional to 492,636.47, 679,580.18 and 427,960.51

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Solution

The fourth proportional to 492,636.47, 679,580.18 and 427,960.51 is: 590,361.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,636.47 : 679,580.18 = 427,960.51 : x
  2. Step 2: Convert to fraction form
    492,636.47/679,580.18 = 427,960.51/x
  3. Step 3: Cross multiply
    492,636.47x = 679,580.18 × 427,960.51
  4. Step 4: Simplify right side
    492,636.47x = 290,833,480,394.75
  5. Step 5: Solve for x
    x = 290,833,480,394.75/492,636.47
  6. Step 6: Final answer
    x = 590,361.25

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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.