Home / 627,450.76-865,881.39-340,970.23

Finding the Fourth Proportional to 627,450.76, 865,881.39 and 340,970.23

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Solution

The fourth proportional to 627,450.76, 865,881.39 and 340,970.23 is: 470,538.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,450.76 : 865,881.39 = 340,970.23 : x
  2. Step 2: Convert to fraction form
    627,450.76/865,881.39 = 340,970.23/x
  3. Step 3: Cross multiply
    627,450.76x = 865,881.39 × 340,970.23
  4. Step 4: Simplify right side
    627,450.76x = 295,239,776,701.02
  5. Step 5: Solve for x
    x = 295,239,776,701.02/627,450.76
  6. Step 6: Final answer
    x = 470,538.56

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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.