Home / 407,619.40-611,429.10-127,136.20

Finding the Fourth Proportional to 407,619.40, 611,429.10 and 127,136.20

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Solution

The fourth proportional to 407,619.40, 611,429.10 and 127,136.20 is: 190,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,619.40 : 611,429.10 = 127,136.20 : x
  2. Step 2: Convert to fraction form
    407,619.40/611,429.10 = 127,136.20/x
  3. Step 3: Cross multiply
    407,619.40x = 611,429.10 × 127,136.20
  4. Step 4: Simplify right side
    407,619.40x = 77,734,772,343.42
  5. Step 5: Solve for x
    x = 77,734,772,343.42/407,619.40
  6. Step 6: Final answer
    x = 190,704.30

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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.