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Finding the Fourth Proportional to 661,273.66, 910,937.91 and 479,451.34

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Solution

The fourth proportional to 661,273.66, 910,937.91 and 479,451.34 is: 660,468.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,273.66 : 910,937.91 = 479,451.34 : x
  2. Step 2: Convert to fraction form
    661,273.66/910,937.91 = 479,451.34/x
  3. Step 3: Cross multiply
    661,273.66x = 910,937.91 × 479,451.34
  4. Step 4: Simplify right side
    661,273.66x = 436,750,401,606.30
  5. Step 5: Solve for x
    x = 436,750,401,606.30/661,273.66
  6. Step 6: Final answer
    x = 660,468.47

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Double scale
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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.