Home / 677,807.38-1,015,355.53-407,786.59

Finding the Fourth Proportional to 677,807.38, 1,015,355.53 and 407,786.59

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Solution

The fourth proportional to 677,807.38, 1,015,355.53 and 407,786.59 is: 610,864.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,807.38 : 1,015,355.53 = 407,786.59 : x
  2. Step 2: Convert to fraction form
    677,807.38/1,015,355.53 = 407,786.59/x
  3. Step 3: Cross multiply
    677,807.38x = 1,015,355.53 × 407,786.59
  4. Step 4: Simplify right side
    677,807.38x = 414,048,369,216.34
  5. Step 5: Solve for x
    x = 414,048,369,216.34/677,807.38
  6. Step 6: Final answer
    x = 610,864.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.