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Finding the Fourth Proportional to 487,276.80, 731,606.40 and 300,652.80

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Solution

The fourth proportional to 487,276.80, 731,606.40 and 300,652.80 is: 451,405.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,276.80 : 731,606.40 = 300,652.80 : x
  2. Step 2: Convert to fraction form
    487,276.80/731,606.40 = 300,652.80/x
  3. Step 3: Cross multiply
    487,276.80x = 731,606.40 × 300,652.80
  4. Step 4: Simplify right side
    487,276.80x = 219,959,512,657.92
  5. Step 5: Solve for x
    x = 219,959,512,657.92/487,276.80
  6. Step 6: Final answer
    x = 451,405.67

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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.