Home / 665,228.35-918,015.98-378,748.36

Finding the Fourth Proportional to 665,228.35, 918,015.98 and 378,748.36

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Solution

The fourth proportional to 665,228.35, 918,015.98 and 378,748.36 is: 522,673.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,228.35 : 918,015.98 = 378,748.36 : x
  2. Step 2: Convert to fraction form
    665,228.35/918,015.98 = 378,748.36/x
  3. Step 3: Cross multiply
    665,228.35x = 918,015.98 × 378,748.36
  4. Step 4: Simplify right side
    665,228.35x = 347,697,046,878.79
  5. Step 5: Solve for x
    x = 347,697,046,878.79/665,228.35
  6. Step 6: Final answer
    x = 522,673.22

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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.