Home / 665,631.60-998,533.80-328,844.40

Finding the Fourth Proportional to 665,631.60, 998,533.80 and 328,844.40

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Solution

The fourth proportional to 665,631.60, 998,533.80 and 328,844.40 is: 493,309.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,631.60 : 998,533.80 = 328,844.40 : x
  2. Step 2: Convert to fraction form
    665,631.60/998,533.80 = 328,844.40/x
  3. Step 3: Cross multiply
    665,631.60x = 998,533.80 × 328,844.40
  4. Step 4: Simplify right side
    665,631.60x = 328,362,248,340.72
  5. Step 5: Solve for x
    x = 328,362,248,340.72/665,631.60
  6. Step 6: Final answer
    x = 493,309.28

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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.