Home / 816,390.40-1,126,612.48-458,694.40

Finding the Fourth Proportional to 816,390.40, 1,126,612.48 and 458,694.40

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Solution

The fourth proportional to 816,390.40, 1,126,612.48 and 458,694.40 is: 632,994.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,390.40 : 1,126,612.48 = 458,694.40 : x
  2. Step 2: Convert to fraction form
    816,390.40/1,126,612.48 = 458,694.40/x
  3. Step 3: Cross multiply
    816,390.40x = 1,126,612.48 × 458,694.40
  4. Step 4: Simplify right side
    816,390.40x = 516,770,835,546.11
  5. Step 5: Solve for x
    x = 516,770,835,546.11/816,390.40
  6. Step 6: Final answer
    x = 632,994.75

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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.