Home / 919,508.60-1,379,270.59-320,468.79

Finding the Fourth Proportional to 919,508.60, 1,379,270.59 and 320,468.79

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Solution

The fourth proportional to 919,508.60, 1,379,270.59 and 320,468.79 is: 480,705.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,508.60 : 1,379,270.59 = 320,468.79 : x
  2. Step 2: Convert to fraction form
    919,508.60/1,379,270.59 = 320,468.79/x
  3. Step 3: Cross multiply
    919,508.60x = 1,379,270.59 × 320,468.79
  4. Step 4: Simplify right side
    919,508.60x = 442,013,176,258.71
  5. Step 5: Solve for x
    x = 442,013,176,258.71/919,508.60
  6. Step 6: Final answer
    x = 480,705.86

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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.