Home / 1,354,400.60-1,868,428.90-810,426.88

Finding the Fourth Proportional to 1,354,400.60, 1,868,428.90 and 810,426.88

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Solution

The fourth proportional to 1,354,400.60, 1,868,428.90 and 810,426.88 is: 1,118,003.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,400.60 : 1,868,428.90 = 810,426.88 : x
  2. Step 2: Convert to fraction form
    1,354,400.60/1,868,428.90 = 810,426.88/x
  3. Step 3: Cross multiply
    1,354,400.60x = 1,868,428.90 × 810,426.88
  4. Step 4: Simplify right side
    1,354,400.60x = 1,514,225,003,928.83
  5. Step 5: Solve for x
    x = 1,514,225,003,928.83/1,354,400.60
  6. Step 6: Final answer
    x = 1,118,003.79

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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.