Home / 2,154,337.90-3,231,980.70-638,139.40

Finding the Fourth Proportional to 2,154,337.90, 3,231,980.70 and 638,139.40

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Solution

The fourth proportional to 2,154,337.90, 3,231,980.70 and 638,139.40 is: 957,349.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154,337.90 : 3,231,980.70 = 638,139.40 : x
  2. Step 2: Convert to fraction form
    2,154,337.90/3,231,980.70 = 638,139.40/x
  3. Step 3: Cross multiply
    2,154,337.90x = 3,231,980.70 × 638,139.40
  4. Step 4: Simplify right side
    2,154,337.90x = 2,062,454,224,709.58
  5. Step 5: Solve for x
    x = 2,062,454,224,709.58/2,154,337.90
  6. Step 6: Final answer
    x = 957,349.46

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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.