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Finding the Fourth Proportional to 885,440.40, 1,328,333.40 and 380,000.40

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Solution

The fourth proportional to 885,440.40, 1,328,333.40 and 380,000.40 is: 570,074.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,440.40 : 1,328,333.40 = 380,000.40 : x
  2. Step 2: Convert to fraction form
    885,440.40/1,328,333.40 = 380,000.40/x
  3. Step 3: Cross multiply
    885,440.40x = 1,328,333.40 × 380,000.40
  4. Step 4: Simplify right side
    885,440.40x = 504,767,223,333.36
  5. Step 5: Solve for x
    x = 504,767,223,333.36/885,440.40
  6. Step 6: Final answer
    x = 570,074.76

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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.