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Finding the Fourth Proportional to 685,224.33, 945,967.73 and 427,179.93

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Solution

The fourth proportional to 685,224.33, 945,967.73 and 427,179.93 is: 589,731.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,224.33 : 945,967.73 = 427,179.93 : x
  2. Step 2: Convert to fraction form
    685,224.33/945,967.73 = 427,179.93/x
  3. Step 3: Cross multiply
    685,224.33x = 945,967.73 × 427,179.93
  4. Step 4: Simplify right side
    685,224.33x = 404,098,426,547.76
  5. Step 5: Solve for x
    x = 404,098,426,547.76/685,224.33
  6. Step 6: Final answer
    x = 589,731.58

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1.5x scale

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.