Home / 657,400.08-986,247.90-208,147.80

Finding the Fourth Proportional to 657,400.08, 986,247.90 and 208,147.80

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Solution

The fourth proportional to 657,400.08, 986,247.90 and 208,147.80 is: 312,268.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,400.08 : 986,247.90 = 208,147.80 : x
  2. Step 2: Convert to fraction form
    657,400.08/986,247.90 = 208,147.80/x
  3. Step 3: Cross multiply
    657,400.08x = 986,247.90 × 208,147.80
  4. Step 4: Simplify right side
    657,400.08x = 205,285,330,639.62
  5. Step 5: Solve for x
    x = 205,285,330,639.62/657,400.08
  6. Step 6: Final answer
    x = 312,268.49

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1.5x scale

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.