Home / 627,385.51-865,797.47-340,905.60

Finding the Fourth Proportional to 627,385.51, 865,797.47 and 340,905.60

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Solution

The fourth proportional to 627,385.51, 865,797.47 and 340,905.60 is: 470,452.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,385.51 : 865,797.47 = 340,905.60 : x
  2. Step 2: Convert to fraction form
    627,385.51/865,797.47 = 340,905.60/x
  3. Step 3: Cross multiply
    627,385.51x = 865,797.47 × 340,905.60
  4. Step 4: Simplify right side
    627,385.51x = 295,155,205,988.83
  5. Step 5: Solve for x
    x = 295,155,205,988.83/627,385.51
  6. Step 6: Final answer
    x = 470,452.70

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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.