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Finding the Fourth Proportional to 515,586.63, 711,595.05 and 300,726.69

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Solution

The fourth proportional to 515,586.63, 711,595.05 and 300,726.69 is: 415,052.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,586.63 : 711,595.05 = 300,726.69 : x
  2. Step 2: Convert to fraction form
    515,586.63/711,595.05 = 300,726.69/x
  3. Step 3: Cross multiply
    515,586.63x = 711,595.05 × 300,726.69
  4. Step 4: Simplify right side
    515,586.63x = 213,995,624,006.89
  5. Step 5: Solve for x
    x = 213,995,624,006.89/515,586.63
  6. Step 6: Final answer
    x = 415,052.70

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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.