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Finding the Fourth Proportional to 504,667.54, 696,417.78 and 289,656.28

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Solution

The fourth proportional to 504,667.54, 696,417.78 and 289,656.28 is: 399,712.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,667.54 : 696,417.78 = 289,656.28 : x
  2. Step 2: Convert to fraction form
    504,667.54/696,417.78 = 289,656.28/x
  3. Step 3: Cross multiply
    504,667.54x = 696,417.78 × 289,656.28
  4. Step 4: Simplify right side
    504,667.54x = 201,721,783,480.66
  5. Step 5: Solve for x
    x = 201,721,783,480.66/504,667.54
  6. Step 6: Final answer
    x = 399,712.22

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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.