Home / 859,703.80-1,289,555.70-461,123.05

Finding the Fourth Proportional to 859,703.80, 1,289,555.70 and 461,123.05

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Solution

The fourth proportional to 859,703.80, 1,289,555.70 and 461,123.05 is: 691,684.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,703.80 : 1,289,555.70 = 461,123.05 : x
  2. Step 2: Convert to fraction form
    859,703.80/1,289,555.70 = 461,123.05/x
  3. Step 3: Cross multiply
    859,703.80x = 1,289,555.70 × 461,123.05
  4. Step 4: Simplify right side
    859,703.80x = 594,643,857,528.89
  5. Step 5: Solve for x
    x = 594,643,857,528.89/859,703.80
  6. Step 6: Final answer
    x = 691,684.58

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Double scale
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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.