Home / 919,707.21-1,379,768.38-280,068.17

Finding the Fourth Proportional to 919,707.21, 1,379,768.38 and 280,068.17

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Solution

The fourth proportional to 919,707.21, 1,379,768.38 and 280,068.17 is: 420,165.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,707.21 : 1,379,768.38 = 280,068.17 : x
  2. Step 2: Convert to fraction form
    919,707.21/1,379,768.38 = 280,068.17/x
  3. Step 3: Cross multiply
    919,707.21x = 1,379,768.38 × 280,068.17
  4. Step 4: Simplify right side
    919,707.21x = 386,429,197,611.45
  5. Step 5: Solve for x
    x = 386,429,197,611.45/919,707.21
  6. Step 6: Final answer
    x = 420,165.45

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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.