Home / 1,189,188.36-1,641,071.64-645,310.32

Finding the Fourth Proportional to 1,189,188.36, 1,641,071.64 and 645,310.32

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Solution

The fourth proportional to 1,189,188.36, 1,641,071.64 and 645,310.32 is: 890,523.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,188.36 : 1,641,071.64 = 645,310.32 : x
  2. Step 2: Convert to fraction form
    1,189,188.36/1,641,071.64 = 645,310.32/x
  3. Step 3: Cross multiply
    1,189,188.36x = 1,641,071.64 × 645,310.32
  4. Step 4: Simplify right side
    1,189,188.36x = 1,059,000,465,151.32
  5. Step 5: Solve for x
    x = 1,059,000,465,151.32/1,189,188.36
  6. Step 6: Final answer
    x = 890,523.74

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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.