Home / 1,078,346-1,617,378.47-320,172.23

Finding the Fourth Proportional to 1,078,346, 1,617,378.47 and 320,172.23

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Solution

The fourth proportional to 1,078,346, 1,617,378.47 and 320,172.23 is: 480,216.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,346 : 1,617,378.47 = 320,172.23 : x
  2. Step 2: Convert to fraction form
    1,078,346/1,617,378.47 = 320,172.23/x
  3. Step 3: Cross multiply
    1,078,346x = 1,617,378.47 × 320,172.23
  4. Step 4: Simplify right side
    1,078,346x = 517,839,669,893.03
  5. Step 5: Solve for x
    x = 517,839,669,893.03/1,078,346
  6. Step 6: Final answer
    x = 480,216.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.