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Finding the Fourth Proportional to 666,695, 920,032.06 and 360,764.68

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Solution

The fourth proportional to 666,695, 920,032.06 and 360,764.68 is: 497,851.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,695 : 920,032.06 = 360,764.68 : x
  2. Step 2: Convert to fraction form
    666,695/920,032.06 = 360,764.68/x
  3. Step 3: Cross multiply
    666,695x = 920,032.06 × 360,764.68
  4. Step 4: Simplify right side
    666,695x = 331,915,071,715.64
  5. Step 5: Solve for x
    x = 331,915,071,715.64/666,695
  6. Step 6: Final answer
    x = 497,851.45

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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.