Home / 627,390.72-865,804.39-340,910.81

Finding the Fourth Proportional to 627,390.72, 865,804.39 and 340,910.81

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Solution

The fourth proportional to 627,390.72, 865,804.39 and 340,910.81 is: 470,459.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,390.72 : 865,804.39 = 340,910.81 : x
  2. Step 2: Convert to fraction form
    627,390.72/865,804.39 = 340,910.81/x
  3. Step 3: Cross multiply
    627,390.72x = 865,804.39 × 340,910.81
  4. Step 4: Simplify right side
    627,390.72x = 295,162,075,044.18
  5. Step 5: Solve for x
    x = 295,162,075,044.18/627,390.72
  6. Step 6: Final answer
    x = 470,459.74

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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.