Home / 678,847.37-936,705.33-392,312.16

Finding the Fourth Proportional to 678,847.37, 936,705.33 and 392,312.16

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Solution

The fourth proportional to 678,847.37, 936,705.33 and 392,312.16 is: 541,330.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,847.37 : 936,705.33 = 392,312.16 : x
  2. Step 2: Convert to fraction form
    678,847.37/936,705.33 = 392,312.16/x
  3. Step 3: Cross multiply
    678,847.37x = 936,705.33 × 392,312.16
  4. Step 4: Simplify right side
    678,847.37x = 367,480,891,295.81
  5. Step 5: Solve for x
    x = 367,480,891,295.81/678,847.37
  6. Step 6: Final answer
    x = 541,330.66

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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.