Home / 669,346.36-1,004,019.90-420,203.32

Finding the Fourth Proportional to 669,346.36, 1,004,019.90 and 420,203.32

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Solution

The fourth proportional to 669,346.36, 1,004,019.90 and 420,203.32 is: 630,305.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,346.36 : 1,004,019.90 = 420,203.32 : x
  2. Step 2: Convert to fraction form
    669,346.36/1,004,019.90 = 420,203.32/x
  3. Step 3: Cross multiply
    669,346.36x = 1,004,019.90 × 420,203.32
  4. Step 4: Simplify right side
    669,346.36x = 421,892,495,326.07
  5. Step 5: Solve for x
    x = 421,892,495,326.07/669,346.36
  6. Step 6: Final answer
    x = 630,305.21

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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.