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Finding the Fourth Proportional to 808,911, 1,213,508.88 and 276,307.20

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Solution

The fourth proportional to 808,911, 1,213,508.88 and 276,307.20 is: 414,509.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,911 : 1,213,508.88 = 276,307.20 : x
  2. Step 2: Convert to fraction form
    808,911/1,213,508.88 = 276,307.20/x
  3. Step 3: Cross multiply
    808,911x = 1,213,508.88 × 276,307.20
  4. Step 4: Simplify right side
    808,911x = 335,301,240,807.94
  5. Step 5: Solve for x
    x = 335,301,240,807.94/808,911
  6. Step 6: Final answer
    x = 414,509.43

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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.