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Finding the Fourth Proportional to 800,000.80, 1,196,890.80 and 520,064.80

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Solution

The fourth proportional to 800,000.80, 1,196,890.80 and 520,064.80 is: 778,075.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,000.80 : 1,196,890.80 = 520,064.80 : x
  2. Step 2: Convert to fraction form
    800,000.80/1,196,890.80 = 520,064.80/x
  3. Step 3: Cross multiply
    800,000.80x = 1,196,890.80 × 520,064.80
  4. Step 4: Simplify right side
    800,000.80x = 622,460,774,523.84
  5. Step 5: Solve for x
    x = 622,460,774,523.84/800,000.80
  6. Step 6: Final answer
    x = 778,075.19

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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.