Home / 665,919.50-919,058.81-375,590.66

Finding the Fourth Proportional to 665,919.50, 919,058.81 and 375,590.66

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Solution

The fourth proportional to 665,919.50, 919,058.81 and 375,590.66 is: 518,365.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,919.50 : 919,058.81 = 375,590.66 : x
  2. Step 2: Convert to fraction form
    665,919.50/919,058.81 = 375,590.66/x
  3. Step 3: Cross multiply
    665,919.50x = 919,058.81 × 375,590.66
  4. Step 4: Simplify right side
    665,919.50x = 345,189,898,553.47
  5. Step 5: Solve for x
    x = 345,189,898,553.47/665,919.50
  6. Step 6: Final answer
    x = 518,365.81

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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.