Home / 875,121.70-1,312,682.55-665,169.70

Finding the Fourth Proportional to 875,121.70, 1,312,682.55 and 665,169.70

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Solution

The fourth proportional to 875,121.70, 1,312,682.55 and 665,169.70 is: 997,754.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,121.70 : 1,312,682.55 = 665,169.70 : x
  2. Step 2: Convert to fraction form
    875,121.70/1,312,682.55 = 665,169.70/x
  3. Step 3: Cross multiply
    875,121.70x = 1,312,682.55 × 665,169.70
  4. Step 4: Simplify right side
    875,121.70x = 873,156,657,978.74
  5. Step 5: Solve for x
    x = 873,156,657,978.74/875,121.70
  6. Step 6: Final answer
    x = 997,754.55

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Similar ratio
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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.