Home / 1,421,225.40-2,129,073.30-858,588.60

Finding the Fourth Proportional to 1,421,225.40, 2,129,073.30 and 858,588.60

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Solution

The fourth proportional to 1,421,225.40, 2,129,073.30 and 858,588.60 is: 1,286,212.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,225.40 : 2,129,073.30 = 858,588.60 : x
  2. Step 2: Convert to fraction form
    1,421,225.40/2,129,073.30 = 858,588.60/x
  3. Step 3: Cross multiply
    1,421,225.40x = 2,129,073.30 × 858,588.60
  4. Step 4: Simplify right side
    1,421,225.40x = 1,827,998,063,944.38
  5. Step 5: Solve for x
    x = 1,827,998,063,944.38/1,421,225.40
  6. Step 6: Final answer
    x = 1,286,212.63

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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.