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Finding the Fourth Proportional to 666,709.01, 920,060.85 and 360,785.36

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Solution

The fourth proportional to 666,709.01, 920,060.85 and 360,785.36 is: 497,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,709.01 : 920,060.85 = 360,785.36 : x
  2. Step 2: Convert to fraction form
    666,709.01/920,060.85 = 360,785.36/x
  3. Step 3: Cross multiply
    666,709.01x = 920,060.85 × 360,785.36
  4. Step 4: Simplify right side
    666,709.01x = 331,944,480,388.85
  5. Step 5: Solve for x
    x = 331,944,480,388.85/666,709.01
  6. Step 6: Final answer
    x = 497,885.10

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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.