Home / 678,784.32-936,739.08-372,891.06

Finding the Fourth Proportional to 678,784.32, 936,739.08 and 372,891.06

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Solution

The fourth proportional to 678,784.32, 936,739.08 and 372,891.06 is: 514,598.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,784.32 : 936,739.08 = 372,891.06 : x
  2. Step 2: Convert to fraction form
    678,784.32/936,739.08 = 372,891.06/x
  3. Step 3: Cross multiply
    678,784.32x = 936,739.08 × 372,891.06
  4. Step 4: Simplify right side
    678,784.32x = 349,301,628,484.63
  5. Step 5: Solve for x
    x = 349,301,628,484.63/678,784.32
  6. Step 6: Final answer
    x = 514,598.85

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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.