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Finding the Fourth Proportional to 1,315,722.05, 1,973,581.91 and 495,213.96

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Solution

The fourth proportional to 1,315,722.05, 1,973,581.91 and 495,213.96 is: 742,820.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,722.05 : 1,973,581.91 = 495,213.96 : x
  2. Step 2: Convert to fraction form
    1,315,722.05/1,973,581.91 = 495,213.96/x
  3. Step 3: Cross multiply
    1,315,722.05x = 1,973,581.91 × 495,213.96
  4. Step 4: Simplify right side
    1,315,722.05x = 977,345,310,559.39
  5. Step 5: Solve for x
    x = 977,345,310,559.39/1,315,722.05
  6. Step 6: Final answer
    x = 742,820.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.