Home / 816,115.30-1,143,742.40-816,115.30

Finding the Fourth Proportional to 816,115.30, 1,143,742.40 and 816,115.30

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Solution

The fourth proportional to 816,115.30, 1,143,742.40 and 816,115.30 is: 1,143,742.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,115.30 : 1,143,742.40 = 816,115.30 : x
  2. Step 2: Convert to fraction form
    816,115.30/1,143,742.40 = 816,115.30/x
  3. Step 3: Cross multiply
    816,115.30x = 1,143,742.40 × 816,115.30
  4. Step 4: Simplify right side
    816,115.30x = 933,425,671,898.72
  5. Step 5: Solve for x
    x = 933,425,671,898.72/816,115.30
  6. Step 6: Final answer
    x = 1,143,742.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.