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Finding the Fourth Proportional to 627,390.32, 865,804.10 and 340,910.39

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Solution

The fourth proportional to 627,390.32, 865,804.10 and 340,910.39 is: 470,459.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,390.32 : 865,804.10 = 340,910.39 : x
  2. Step 2: Convert to fraction form
    627,390.32/865,804.10 = 340,910.39/x
  3. Step 3: Cross multiply
    627,390.32x = 865,804.10 × 340,910.39
  4. Step 4: Simplify right side
    627,390.32x = 295,161,607,361.03
  5. Step 5: Solve for x
    x = 295,161,607,361.03/627,390.32
  6. Step 6: Final answer
    x = 470,459.30

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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.