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Finding the Fourth Proportional to 881,885.72, 1,216,993.74 and 479,477.72

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Solution

The fourth proportional to 881,885.72, 1,216,993.74 and 479,477.72 is: 661,674.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,885.72 : 1,216,993.74 = 479,477.72 : x
  2. Step 2: Convert to fraction form
    881,885.72/1,216,993.74 = 479,477.72/x
  3. Step 3: Cross multiply
    881,885.72x = 1,216,993.74 × 479,477.72
  4. Step 4: Simplify right side
    881,885.72x = 583,521,383,709.47
  5. Step 5: Solve for x
    x = 583,521,383,709.47/881,885.72
  6. Step 6: Final answer
    x = 661,674.60

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1.5x scale

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.