Home / 678,904.58-936,888.90-372,981.56

Finding the Fourth Proportional to 678,904.58, 936,888.90 and 372,981.56

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Solution

The fourth proportional to 678,904.58, 936,888.90 and 372,981.56 is: 514,714.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,904.58 : 936,888.90 = 372,981.56 : x
  2. Step 2: Convert to fraction form
    678,904.58/936,888.90 = 372,981.56/x
  3. Step 3: Cross multiply
    678,904.58x = 936,888.90 × 372,981.56
  4. Step 4: Simplify right side
    678,904.58x = 349,442,278,784.24
  5. Step 5: Solve for x
    x = 349,442,278,784.24/678,904.58
  6. Step 6: Final answer
    x = 514,714.86

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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.