Home / 406,128.40-609,250.20-125,616.40

Finding the Fourth Proportional to 406,128.40, 609,250.20 and 125,616.40

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Solution

The fourth proportional to 406,128.40, 609,250.20 and 125,616.40 is: 188,442.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,128.40 : 609,250.20 = 125,616.40 : x
  2. Step 2: Convert to fraction form
    406,128.40/609,250.20 = 125,616.40/x
  3. Step 3: Cross multiply
    406,128.40x = 609,250.20 × 125,616.40
  4. Step 4: Simplify right side
    406,128.40x = 76,531,816,823.28
  5. Step 5: Solve for x
    x = 76,531,816,823.28/406,128.40
  6. Step 6: Final answer
    x = 188,442.42

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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.