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Finding the Fourth Proportional to 487,728.64, 673,170.78 and 296,803.54

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Solution

The fourth proportional to 487,728.64, 673,170.78 and 296,803.54 is: 409,652.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,728.64 : 673,170.78 = 296,803.54 : x
  2. Step 2: Convert to fraction form
    487,728.64/673,170.78 = 296,803.54/x
  3. Step 3: Cross multiply
    487,728.64x = 673,170.78 × 296,803.54
  4. Step 4: Simplify right side
    487,728.64x = 199,799,470,528.56
  5. Step 5: Solve for x
    x = 199,799,470,528.56/487,728.64
  6. Step 6: Final answer
    x = 409,652.94

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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.