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Finding the Fourth Proportional to 548,513.76, 756,953.81 and 306,818.82

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Solution

The fourth proportional to 548,513.76, 756,953.81 and 306,818.82 is: 423,412.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,513.76 : 756,953.81 = 306,818.82 : x
  2. Step 2: Convert to fraction form
    548,513.76/756,953.81 = 306,818.82/x
  3. Step 3: Cross multiply
    548,513.76x = 756,953.81 × 306,818.82
  4. Step 4: Simplify right side
    548,513.76x = 232,247,677,588.58
  5. Step 5: Solve for x
    x = 232,247,677,588.58/548,513.76
  6. Step 6: Final answer
    x = 423,412.67

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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.