Home / 856,629.72-1,285,525.80-457,557.12

Finding the Fourth Proportional to 856,629.72, 1,285,525.80 and 457,557.12

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Solution

The fourth proportional to 856,629.72, 1,285,525.80 and 457,557.12 is: 686,646.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,629.72 : 1,285,525.80 = 457,557.12 : x
  2. Step 2: Convert to fraction form
    856,629.72/1,285,525.80 = 457,557.12/x
  3. Step 3: Cross multiply
    856,629.72x = 1,285,525.80 × 457,557.12
  4. Step 4: Simplify right side
    856,629.72x = 588,201,482,733.70
  5. Step 5: Solve for x
    x = 588,201,482,733.70/856,629.72
  6. Step 6: Final answer
    x = 686,646.13

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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.