Home / 816,513.87-1,126,725.31-453,915.65

Finding the Fourth Proportional to 816,513.87, 1,126,725.31 and 453,915.65

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Solution

The fourth proportional to 816,513.87, 1,126,725.31 and 453,915.65 is: 626,368.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,513.87 : 1,126,725.31 = 453,915.65 : x
  2. Step 2: Convert to fraction form
    816,513.87/1,126,725.31 = 453,915.65/x
  3. Step 3: Cross multiply
    816,513.87x = 1,126,725.31 × 453,915.65
  4. Step 4: Simplify right side
    816,513.87x = 511,438,249,783.12
  5. Step 5: Solve for x
    x = 511,438,249,783.12/816,513.87
  6. Step 6: Final answer
    x = 626,368.11

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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.