Home / 856,816.78-1,182,399.81-469,653.70

Finding the Fourth Proportional to 856,816.78, 1,182,399.81 and 469,653.70

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Solution

The fourth proportional to 856,816.78, 1,182,399.81 and 469,653.70 is: 648,118.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,816.78 : 1,182,399.81 = 469,653.70 : x
  2. Step 2: Convert to fraction form
    856,816.78/1,182,399.81 = 469,653.70/x
  3. Step 3: Cross multiply
    856,816.78x = 1,182,399.81 × 469,653.70
  4. Step 4: Simplify right side
    856,816.78x = 555,318,445,645.80
  5. Step 5: Solve for x
    x = 555,318,445,645.80/856,816.78
  6. Step 6: Final answer
    x = 648,118.08

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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.