Home / 397,749.72-549,097.74-306,901.56

Finding the Fourth Proportional to 397,749.72, 549,097.74 and 306,901.56

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Solution

The fourth proportional to 397,749.72, 549,097.74 and 306,901.56 is: 423,680.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,749.72 : 549,097.74 = 306,901.56 : x
  2. Step 2: Convert to fraction form
    397,749.72/549,097.74 = 306,901.56/x
  3. Step 3: Cross multiply
    397,749.72x = 549,097.74 × 306,901.56
  4. Step 4: Simplify right side
    397,749.72x = 168,518,952,998.47
  5. Step 5: Solve for x
    x = 168,518,952,998.47/397,749.72
  6. Step 6: Final answer
    x = 423,680.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.