Home / 693,681.36-957,402.09-403,382.76

Finding the Fourth Proportional to 693,681.36, 957,402.09 and 403,382.76

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Solution

The fourth proportional to 693,681.36, 957,402.09 and 403,382.76 is: 556,739.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,681.36 : 957,402.09 = 403,382.76 : x
  2. Step 2: Convert to fraction form
    693,681.36/957,402.09 = 403,382.76/x
  3. Step 3: Cross multiply
    693,681.36x = 957,402.09 × 403,382.76
  4. Step 4: Simplify right side
    693,681.36x = 386,199,497,493.97
  5. Step 5: Solve for x
    x = 386,199,497,493.97/693,681.36
  6. Step 6: Final answer
    x = 556,739.04

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.