Home / 685,868.10-946,487.61-384,072.90

Finding the Fourth Proportional to 685,868.10, 946,487.61 and 384,072.90

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Solution

The fourth proportional to 685,868.10, 946,487.61 and 384,072.90 is: 530,014.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,868.10 : 946,487.61 = 384,072.90 : x
  2. Step 2: Convert to fraction form
    685,868.10/946,487.61 = 384,072.90/x
  3. Step 3: Cross multiply
    685,868.10x = 946,487.61 × 384,072.90
  4. Step 4: Simplify right side
    685,868.10x = 363,520,241,186.77
  5. Step 5: Solve for x
    x = 363,520,241,186.77/685,868.10
  6. Step 6: Final answer
    x = 530,014.80

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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.