Home / 669,339.36-1,004,009.40-420,196.32

Finding the Fourth Proportional to 669,339.36, 1,004,009.40 and 420,196.32

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Solution

The fourth proportional to 669,339.36, 1,004,009.40 and 420,196.32 is: 630,294.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,339.36 : 1,004,009.40 = 420,196.32 : x
  2. Step 2: Convert to fraction form
    669,339.36/1,004,009.40 = 420,196.32/x
  3. Step 3: Cross multiply
    669,339.36x = 1,004,009.40 × 420,196.32
  4. Step 4: Simplify right side
    669,339.36x = 421,881,055,125.41
  5. Step 5: Solve for x
    x = 421,881,055,125.41/669,339.36
  6. Step 6: Final answer
    x = 630,294.71

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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.