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Finding the Fourth Proportional to 1,215,369, 1,677,243.04 and 671,539.84

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Solution

The fourth proportional to 1,215,369, 1,677,243.04 and 671,539.84 is: 926,743.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,369 : 1,677,243.04 = 671,539.84 : x
  2. Step 2: Convert to fraction form
    1,215,369/1,677,243.04 = 671,539.84/x
  3. Step 3: Cross multiply
    1,215,369x = 1,677,243.04 × 671,539.84
  4. Step 4: Simplify right side
    1,215,369x = 1,126,335,522,722.71
  5. Step 5: Solve for x
    x = 1,126,335,522,722.71/1,215,369
  6. Step 6: Final answer
    x = 926,743.67

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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.