Home / 745,213.14-1,028,394-405,681.30

Finding the Fourth Proportional to 745,213.14, 1,028,394 and 405,681.30

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Solution

The fourth proportional to 745,213.14, 1,028,394 and 405,681.30 is: 559,840.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,213.14 : 1,028,394 = 405,681.30 : x
  2. Step 2: Convert to fraction form
    745,213.14/1,028,394 = 405,681.30/x
  3. Step 3: Cross multiply
    745,213.14x = 1,028,394 × 405,681.30
  4. Step 4: Simplify right side
    745,213.14x = 417,200,214,832.20
  5. Step 5: Solve for x
    x = 417,200,214,832.20/745,213.14
  6. Step 6: Final answer
    x = 559,840.12

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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.