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Finding the Fourth Proportional to 548,534.76, 757,040.76 and 306,878.58

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Solution

The fourth proportional to 548,534.76, 757,040.76 and 306,878.58 is: 423,527.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,534.76 : 757,040.76 = 306,878.58 : x
  2. Step 2: Convert to fraction form
    548,534.76/757,040.76 = 306,878.58/x
  3. Step 3: Cross multiply
    548,534.76x = 757,040.76 × 306,878.58
  4. Step 4: Simplify right side
    548,534.76x = 232,319,593,430.92
  5. Step 5: Solve for x
    x = 232,319,593,430.92/548,534.76
  6. Step 6: Final answer
    x = 423,527.57

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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.