Home / 1,122,155.96-1,548,585.08-638,752.21

Finding the Fourth Proportional to 1,122,155.96, 1,548,585.08 and 638,752.21

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Solution

The fourth proportional to 1,122,155.96, 1,548,585.08 and 638,752.21 is: 881,483.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,155.96 : 1,548,585.08 = 638,752.21 : x
  2. Step 2: Convert to fraction form
    1,122,155.96/1,548,585.08 = 638,752.21/x
  3. Step 3: Cross multiply
    1,122,155.96x = 1,548,585.08 × 638,752.21
  4. Step 4: Simplify right side
    1,122,155.96x = 989,162,135,157.80
  5. Step 5: Solve for x
    x = 989,162,135,157.80/1,122,155.96
  6. Step 6: Final answer
    x = 881,483.66

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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.