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Finding the Fourth Proportional to 555,733.54, 766,630.12 and 351,440.40

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Solution

The fourth proportional to 555,733.54, 766,630.12 and 351,440.40 is: 484,809.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,733.54 : 766,630.12 = 351,440.40 : x
  2. Step 2: Convert to fraction form
    555,733.54/766,630.12 = 351,440.40/x
  3. Step 3: Cross multiply
    555,733.54x = 766,630.12 × 351,440.40
  4. Step 4: Simplify right side
    555,733.54x = 269,424,796,024.85
  5. Step 5: Solve for x
    x = 269,424,796,024.85/555,733.54
  6. Step 6: Final answer
    x = 484,809.31

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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.