Home / 678,029.62-935,618.94-402,339.94

Finding the Fourth Proportional to 678,029.62, 935,618.94 and 402,339.94

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Solution

The fourth proportional to 678,029.62, 935,618.94 and 402,339.94 is: 555,192.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,029.62 : 935,618.94 = 402,339.94 : x
  2. Step 2: Convert to fraction form
    678,029.62/935,618.94 = 402,339.94/x
  3. Step 3: Cross multiply
    678,029.62x = 935,618.94 × 402,339.94
  4. Step 4: Simplify right side
    678,029.62x = 376,436,868,182.46
  5. Step 5: Solve for x
    x = 376,436,868,182.46/678,029.62
  6. Step 6: Final answer
    x = 555,192.36

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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.