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Finding the Fourth Proportional to 526,978.60, 727,328.88 and 300,624.04

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Solution

The fourth proportional to 526,978.60, 727,328.88 and 300,624.04 is: 414,917.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,978.60 : 727,328.88 = 300,624.04 : x
  2. Step 2: Convert to fraction form
    526,978.60/727,328.88 = 300,624.04/x
  3. Step 3: Cross multiply
    526,978.60x = 727,328.88 × 300,624.04
  4. Step 4: Simplify right side
    526,978.60x = 218,652,546,314.28
  5. Step 5: Solve for x
    x = 218,652,546,314.28/526,978.60
  6. Step 6: Final answer
    x = 414,917.32

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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.