Home / 678,848.96-936,707.52-392,313.75

Finding the Fourth Proportional to 678,848.96, 936,707.52 and 392,313.75

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Solution

The fourth proportional to 678,848.96, 936,707.52 and 392,313.75 is: 541,332.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,848.96 : 936,707.52 = 392,313.75 : x
  2. Step 2: Convert to fraction form
    678,848.96/936,707.52 = 392,313.75/x
  3. Step 3: Cross multiply
    678,848.96x = 936,707.52 × 392,313.75
  4. Step 4: Simplify right side
    678,848.96x = 367,483,239,824.40
  5. Step 5: Solve for x
    x = 367,483,239,824.40/678,848.96
  6. Step 6: Final answer
    x = 541,332.85

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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.