Home / 1,189,143.39-1,641,009.56-645,265.35

Finding the Fourth Proportional to 1,189,143.39, 1,641,009.56 and 645,265.35

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Solution

The fourth proportional to 1,189,143.39, 1,641,009.56 and 645,265.35 is: 890,461.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,143.39 : 1,641,009.56 = 645,265.35 : x
  2. Step 2: Convert to fraction form
    1,189,143.39/1,641,009.56 = 645,265.35/x
  3. Step 3: Cross multiply
    1,189,143.39x = 1,641,009.56 × 645,265.35
  4. Step 4: Simplify right side
    1,189,143.39x = 1,058,886,604,860.42
  5. Step 5: Solve for x
    x = 1,058,886,604,860.42/1,189,143.39
  6. Step 6: Final answer
    x = 890,461.66

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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.