Home / 645,071.44-966,393.38-378,038.74

Finding the Fourth Proportional to 645,071.44, 966,393.38 and 378,038.74

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Solution

The fourth proportional to 645,071.44, 966,393.38 and 378,038.74 is: 566,346.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,071.44 : 966,393.38 = 378,038.74 : x
  2. Step 2: Convert to fraction form
    645,071.44/966,393.38 = 378,038.74/x
  3. Step 3: Cross multiply
    645,071.44x = 966,393.38 × 378,038.74
  4. Step 4: Simplify right side
    645,071.44x = 365,334,135,719.54
  5. Step 5: Solve for x
    x = 365,334,135,719.54/645,071.44
  6. Step 6: Final answer
    x = 566,346.78

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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.