Home / 863,642.07-1,293,728.17-430,053.26

Finding the Fourth Proportional to 863,642.07, 1,293,728.17 and 430,053.26

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Solution

The fourth proportional to 863,642.07, 1,293,728.17 and 430,053.26 is: 644,215.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,642.07 : 1,293,728.17 = 430,053.26 : x
  2. Step 2: Convert to fraction form
    863,642.07/1,293,728.17 = 430,053.26/x
  3. Step 3: Cross multiply
    863,642.07x = 1,293,728.17 × 430,053.26
  4. Step 4: Simplify right side
    863,642.07x = 556,372,017,062.33
  5. Step 5: Solve for x
    x = 556,372,017,062.33/863,642.07
  6. Step 6: Final answer
    x = 644,215.97

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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.