Home / 678,289.46-936,051.13-372,394.18

Finding the Fourth Proportional to 678,289.46, 936,051.13 and 372,394.18

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Solution

The fourth proportional to 678,289.46, 936,051.13 and 372,394.18 is: 513,910.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,289.46 : 936,051.13 = 372,394.18 : x
  2. Step 2: Convert to fraction form
    678,289.46/936,051.13 = 372,394.18/x
  3. Step 3: Cross multiply
    678,289.46x = 936,051.13 × 372,394.18
  4. Step 4: Simplify right side
    678,289.46x = 348,579,992,994.42
  5. Step 5: Solve for x
    x = 348,579,992,994.42/678,289.46
  6. Step 6: Final answer
    x = 513,910.38

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Double scale
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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.