Home / 875,128.20-1,312,692.30-665,176.20

Finding the Fourth Proportional to 875,128.20, 1,312,692.30 and 665,176.20

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Solution

The fourth proportional to 875,128.20, 1,312,692.30 and 665,176.20 is: 997,764.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,128.20 : 1,312,692.30 = 665,176.20 : x
  2. Step 2: Convert to fraction form
    875,128.20/1,312,692.30 = 665,176.20/x
  3. Step 3: Cross multiply
    875,128.20x = 1,312,692.30 × 665,176.20
  4. Step 4: Simplify right side
    875,128.20x = 873,171,675,883.26
  5. Step 5: Solve for x
    x = 873,171,675,883.26/875,128.20
  6. Step 6: Final answer
    x = 997,764.30

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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.