Home / 721,541.61-1,081,978.83-405,998.49

Finding the Fourth Proportional to 721,541.61, 1,081,978.83 and 405,998.49

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Solution

The fourth proportional to 721,541.61, 1,081,978.83 and 405,998.49 is: 608,810.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,541.61 : 1,081,978.83 = 405,998.49 : x
  2. Step 2: Convert to fraction form
    721,541.61/1,081,978.83 = 405,998.49/x
  3. Step 3: Cross multiply
    721,541.61x = 1,081,978.83 × 405,998.49
  4. Step 4: Simplify right side
    721,541.61x = 439,281,771,191.97
  5. Step 5: Solve for x
    x = 439,281,771,191.97/721,541.61
  6. Step 6: Final answer
    x = 608,810.03

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Double scale
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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.