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Finding the Fourth Proportional to 1,315,915.04, 1,973,739.72 and 892,171.64

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Solution

The fourth proportional to 1,315,915.04, 1,973,739.72 and 892,171.64 is: 1,338,167.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,915.04 : 1,973,739.72 = 892,171.64 : x
  2. Step 2: Convert to fraction form
    1,315,915.04/1,973,739.72 = 892,171.64/x
  3. Step 3: Cross multiply
    1,315,915.04x = 1,973,739.72 × 892,171.64
  4. Step 4: Simplify right side
    1,315,915.04x = 1,760,914,602,925.54
  5. Step 5: Solve for x
    x = 1,760,914,602,925.54/1,315,915.04
  6. Step 6: Final answer
    x = 1,338,167.40

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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.