Home / 678,318.36-1,017,477.56-257,594.23

Finding the Fourth Proportional to 678,318.36, 1,017,477.56 and 257,594.23

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Solution

The fourth proportional to 678,318.36, 1,017,477.56 and 257,594.23 is: 386,391.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,318.36 : 1,017,477.56 = 257,594.23 : x
  2. Step 2: Convert to fraction form
    678,318.36/1,017,477.56 = 257,594.23/x
  3. Step 3: Cross multiply
    678,318.36x = 1,017,477.56 × 257,594.23
  4. Step 4: Simplify right side
    678,318.36x = 262,096,348,610.48
  5. Step 5: Solve for x
    x = 262,096,348,610.48/678,318.36
  6. Step 6: Final answer
    x = 386,391.35

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Half scale
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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.