Home / 678,933.12-936,957.38-377,127.12

Finding the Fourth Proportional to 678,933.12, 936,957.38 and 377,127.12

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Solution

The fourth proportional to 678,933.12, 936,957.38 and 377,127.12 is: 520,451.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,933.12 : 936,957.38 = 377,127.12 : x
  2. Step 2: Convert to fraction form
    678,933.12/936,957.38 = 377,127.12/x
  3. Step 3: Cross multiply
    678,933.12x = 936,957.38 × 377,127.12
  4. Step 4: Simplify right side
    678,933.12x = 353,352,038,282.15
  5. Step 5: Solve for x
    x = 353,352,038,282.15/678,933.12
  6. Step 6: Final answer
    x = 520,451.91

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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.