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Finding the Fourth Proportional to 486,152.88, 670,783.86 and 282,085.56

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Solution

The fourth proportional to 486,152.88, 670,783.86 and 282,085.56 is: 389,215.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,152.88 : 670,783.86 = 282,085.56 : x
  2. Step 2: Convert to fraction form
    486,152.88/670,783.86 = 282,085.56/x
  3. Step 3: Cross multiply
    486,152.88x = 670,783.86 × 282,085.56
  4. Step 4: Simplify right side
    486,152.88x = 189,218,440,787.06
  5. Step 5: Solve for x
    x = 189,218,440,787.06/486,152.88
  6. Step 6: Final answer
    x = 389,215.92

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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.