Home / 1,638,394-2,458,005.84-456,442

Finding the Fourth Proportional to 1,638,394, 2,458,005.84 and 456,442

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Solution

The fourth proportional to 1,638,394, 2,458,005.84 and 456,442 is: 684,778.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,394 : 2,458,005.84 = 456,442 : x
  2. Step 2: Convert to fraction form
    1,638,394/2,458,005.84 = 456,442/x
  3. Step 3: Cross multiply
    1,638,394x = 2,458,005.84 × 456,442
  4. Step 4: Simplify right side
    1,638,394x = 1,121,937,101,621.28
  5. Step 5: Solve for x
    x = 1,121,937,101,621.28/1,638,394
  6. Step 6: Final answer
    x = 684,778.57

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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.