Home / 1,271,308.10-1,904,009.70-869,774.90

Finding the Fourth Proportional to 1,271,308.10, 1,904,009.70 and 869,774.90

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Solution

The fourth proportional to 1,271,308.10, 1,904,009.70 and 869,774.90 is: 1,302,642.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,308.10 : 1,904,009.70 = 869,774.90 : x
  2. Step 2: Convert to fraction form
    1,271,308.10/1,904,009.70 = 869,774.90/x
  3. Step 3: Cross multiply
    1,271,308.10x = 1,904,009.70 × 869,774.90
  4. Step 4: Simplify right side
    1,271,308.10x = 1,656,059,846,416.53
  5. Step 5: Solve for x
    x = 1,656,059,846,416.53/1,271,308.10
  6. Step 6: Final answer
    x = 1,302,642.41

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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.