Home / 669,343.36-1,004,015.40-420,200.32

Finding the Fourth Proportional to 669,343.36, 1,004,015.40 and 420,200.32

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Solution

The fourth proportional to 669,343.36, 1,004,015.40 and 420,200.32 is: 630,300.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,343.36 : 1,004,015.40 = 420,200.32 : x
  2. Step 2: Convert to fraction form
    669,343.36/1,004,015.40 = 420,200.32/x
  3. Step 3: Cross multiply
    669,343.36x = 1,004,015.40 × 420,200.32
  4. Step 4: Simplify right side
    669,343.36x = 421,887,592,364.93
  5. Step 5: Solve for x
    x = 421,887,592,364.93/669,343.36
  6. Step 6: Final answer
    x = 630,300.71

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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.