Home / 678,237.36-935,932.64-402,606.78

Finding the Fourth Proportional to 678,237.36, 935,932.64 and 402,606.78

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Solution

The fourth proportional to 678,237.36, 935,932.64 and 402,606.78 is: 555,576.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,237.36 : 935,932.64 = 402,606.78 : x
  2. Step 2: Convert to fraction form
    678,237.36/935,932.64 = 402,606.78/x
  3. Step 3: Cross multiply
    678,237.36x = 935,932.64 × 402,606.78
  4. Step 4: Simplify right side
    678,237.36x = 376,812,826,487.30
  5. Step 5: Solve for x
    x = 376,812,826,487.30/678,237.36
  6. Step 6: Final answer
    x = 555,576.63

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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.