Home / 355,653.09-491,280.53-284,541.57

Finding the Fourth Proportional to 355,653.09, 491,280.53 and 284,541.57

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Solution

The fourth proportional to 355,653.09, 491,280.53 and 284,541.57 is: 393,050.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,653.09 : 491,280.53 = 284,541.57 : x
  2. Step 2: Convert to fraction form
    355,653.09/491,280.53 = 284,541.57/x
  3. Step 3: Cross multiply
    355,653.09x = 491,280.53 × 284,541.57
  4. Step 4: Simplify right side
    355,653.09x = 139,789,731,893.92
  5. Step 5: Solve for x
    x = 139,789,731,893.92/355,653.09
  6. Step 6: Final answer
    x = 393,050.80

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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.