Home / 1,189,229-1,641,137.07-645,364.79

Finding the Fourth Proportional to 1,189,229, 1,641,137.07 and 645,364.79

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Solution

The fourth proportional to 1,189,229, 1,641,137.07 and 645,364.79 is: 890,603.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,229 : 1,641,137.07 = 645,364.79 : x
  2. Step 2: Convert to fraction form
    1,189,229/1,641,137.07 = 645,364.79/x
  3. Step 3: Cross multiply
    1,189,229x = 1,641,137.07 × 645,364.79
  4. Step 4: Simplify right side
    1,189,229x = 1,059,132,080,541.77
  5. Step 5: Solve for x
    x = 1,059,132,080,541.77/1,189,229
  6. Step 6: Final answer
    x = 890,603.98

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Double scale
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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.