Home / 665,226.35-918,013.22-378,746.36

Finding the Fourth Proportional to 665,226.35, 918,013.22 and 378,746.36

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Solution

The fourth proportional to 665,226.35, 918,013.22 and 378,746.36 is: 522,670.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,226.35 : 918,013.22 = 378,746.36 : x
  2. Step 2: Convert to fraction form
    665,226.35/918,013.22 = 378,746.36/x
  3. Step 3: Cross multiply
    665,226.35x = 918,013.22 × 378,746.36
  4. Step 4: Simplify right side
    665,226.35x = 347,694,165,506.88
  5. Step 5: Solve for x
    x = 347,694,165,506.88/665,226.35
  6. Step 6: Final answer
    x = 522,670.46

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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.