Home / 699,261.51-964,707.56-393,267.69

Finding the Fourth Proportional to 699,261.51, 964,707.56 and 393,267.69

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Solution

The fourth proportional to 699,261.51, 964,707.56 and 393,267.69 is: 542,555.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,261.51 : 964,707.56 = 393,267.69 : x
  2. Step 2: Convert to fraction form
    699,261.51/964,707.56 = 393,267.69/x
  3. Step 3: Cross multiply
    699,261.51x = 964,707.56 × 393,267.69
  4. Step 4: Simplify right side
    699,261.51x = 379,388,311,680.40
  5. Step 5: Solve for x
    x = 379,388,311,680.40/699,261.51
  6. Step 6: Final answer
    x = 542,555.69

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Double scale
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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.