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Finding the Fourth Proportional to 477,009.72, 715,507.29 and 122,020.74

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Solution

The fourth proportional to 477,009.72, 715,507.29 and 122,020.74 is: 183,029.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,009.72 : 715,507.29 = 122,020.74 : x
  2. Step 2: Convert to fraction form
    477,009.72/715,507.29 = 122,020.74/x
  3. Step 3: Cross multiply
    477,009.72x = 715,507.29 × 122,020.74
  4. Step 4: Simplify right side
    477,009.72x = 87,306,729,001.19
  5. Step 5: Solve for x
    x = 87,306,729,001.19/477,009.72
  6. Step 6: Final answer
    x = 183,029.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.