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Finding the Fourth Proportional to 548,913.70, 757,965.90 and 345,030.28

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Solution

The fourth proportional to 548,913.70, 757,965.90 and 345,030.28 is: 476,434.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,913.70 : 757,965.90 = 345,030.28 : x
  2. Step 2: Convert to fraction form
    548,913.70/757,965.90 = 345,030.28/x
  3. Step 3: Cross multiply
    548,913.70x = 757,965.90 × 345,030.28
  4. Step 4: Simplify right side
    548,913.70x = 261,521,186,707.45
  5. Step 5: Solve for x
    x = 261,521,186,707.45/548,913.70
  6. Step 6: Final answer
    x = 476,434.07

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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.