Home / 637,688.49-879,945.00-392,634.33

Finding the Fourth Proportional to 637,688.49, 879,945.00 and 392,634.33

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Solution

The fourth proportional to 637,688.49, 879,945.00 and 392,634.33 is: 541,795.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,688.49 : 879,945.00 = 392,634.33 : x
  2. Step 2: Convert to fraction form
    637,688.49/879,945.00 = 392,634.33/x
  3. Step 3: Cross multiply
    637,688.49x = 879,945.00 × 392,634.33
  4. Step 4: Simplify right side
    637,688.49x = 345,496,614,039.47
  5. Step 5: Solve for x
    x = 345,496,614,039.47/637,688.49
  6. Step 6: Final answer
    x = 541,795.28

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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.