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Finding the Fourth Proportional to 448,749.60, 673,124.40 and 431,034.90

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Solution

The fourth proportional to 448,749.60, 673,124.40 and 431,034.90 is: 646,552.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,749.60 : 673,124.40 = 431,034.90 : x
  2. Step 2: Convert to fraction form
    448,749.60/673,124.40 = 431,034.90/x
  3. Step 3: Cross multiply
    448,749.60x = 673,124.40 × 431,034.90
  4. Step 4: Simplify right side
    448,749.60x = 290,140,108,441.56
  5. Step 5: Solve for x
    x = 290,140,108,441.56/448,749.60
  6. Step 6: Final answer
    x = 646,552.35

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Similar ratio
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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.