Home / 821,481.28-1,133,638.71-458,901.92

Finding the Fourth Proportional to 821,481.28, 1,133,638.71 and 458,901.92

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Solution

The fourth proportional to 821,481.28, 1,133,638.71 and 458,901.92 is: 633,281.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,481.28 : 1,133,638.71 = 458,901.92 : x
  2. Step 2: Convert to fraction form
    821,481.28/1,133,638.71 = 458,901.92/x
  3. Step 3: Cross multiply
    821,481.28x = 1,133,638.71 × 458,901.92
  4. Step 4: Simplify right side
    821,481.28x = 520,228,980,605.32
  5. Step 5: Solve for x
    x = 520,228,980,605.32/821,481.28
  6. Step 6: Final answer
    x = 633,281.60

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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.