Home / 761,021.30-1,140,706.57-381,025.60

Finding the Fourth Proportional to 761,021.30, 1,140,706.57 and 381,025.60

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Solution

The fourth proportional to 761,021.30, 1,140,706.57 and 381,025.60 is: 571,125.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,021.30 : 1,140,706.57 = 381,025.60 : x
  2. Step 2: Convert to fraction form
    761,021.30/1,140,706.57 = 381,025.60/x
  3. Step 3: Cross multiply
    761,021.30x = 1,140,706.57 × 381,025.60
  4. Step 4: Simplify right side
    761,021.30x = 434,638,405,258.19
  5. Step 5: Solve for x
    x = 434,638,405,258.19/761,021.30
  6. Step 6: Final answer
    x = 571,125.15

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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.