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Finding the Fourth Proportional to 545,876.74, 753,353.22 and 300,905.07

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Solution

The fourth proportional to 545,876.74, 753,353.22 and 300,905.07 is: 415,272.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,876.74 : 753,353.22 = 300,905.07 : x
  2. Step 2: Convert to fraction form
    545,876.74/753,353.22 = 300,905.07/x
  3. Step 3: Cross multiply
    545,876.74x = 753,353.22 × 300,905.07
  4. Step 4: Simplify right side
    545,876.74x = 226,687,803,398.83
  5. Step 5: Solve for x
    x = 226,687,803,398.83/545,876.74
  6. Step 6: Final answer
    x = 415,272.88

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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.