Home / 627,384.51-865,796.09-340,904.60

Finding the Fourth Proportional to 627,384.51, 865,796.09 and 340,904.60

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Solution

The fourth proportional to 627,384.51, 865,796.09 and 340,904.60 is: 470,451.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,384.51 : 865,796.09 = 340,904.60 : x
  2. Step 2: Convert to fraction form
    627,384.51/865,796.09 = 340,904.60/x
  3. Step 3: Cross multiply
    627,384.51x = 865,796.09 × 340,904.60
  4. Step 4: Simplify right side
    627,384.51x = 295,153,869,743.01
  5. Step 5: Solve for x
    x = 295,153,869,743.01/627,384.51
  6. Step 6: Final answer
    x = 470,451.32

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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.