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Finding the Fourth Proportional to 624,645.90, 862,010.26 and 338,165.91

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Solution

The fourth proportional to 624,645.90, 862,010.26 and 338,165.91 is: 466,668.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,645.90 : 862,010.26 = 338,165.91 : x
  2. Step 2: Convert to fraction form
    624,645.90/862,010.26 = 338,165.91/x
  3. Step 3: Cross multiply
    624,645.90x = 862,010.26 × 338,165.91
  4. Step 4: Simplify right side
    624,645.90x = 291,502,483,156.82
  5. Step 5: Solve for x
    x = 291,502,483,156.82/624,645.90
  6. Step 6: Final answer
    x = 466,668.37

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1.5x scale

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.