Home / 816,725.79-1,126,915.61-477,128.43

Finding the Fourth Proportional to 816,725.79, 1,126,915.61 and 477,128.43

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Solution

The fourth proportional to 816,725.79, 1,126,915.61 and 477,128.43 is: 658,340.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,725.79 : 1,126,915.61 = 477,128.43 : x
  2. Step 2: Convert to fraction form
    816,725.79/1,126,915.61 = 477,128.43/x
  3. Step 3: Cross multiply
    816,725.79x = 1,126,915.61 × 477,128.43
  4. Step 4: Simplify right side
    816,725.79x = 537,683,473,356.15
  5. Step 5: Solve for x
    x = 537,683,473,356.15/816,725.79
  6. Step 6: Final answer
    x = 658,340.27

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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.