Home / 1,318,339,763.55-1,820,818,806.12-868,229,826.75

Finding the Fourth Proportional to 1,318,339,763.55, 1,820,818,806.12 and 868,229,826.75

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Solution

The fourth proportional to 1,318,339,763.55, 1,820,818,806.12 and 868,229,826.75 is: 1,199,151,569.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,339,763.55 : 1,820,818,806.12 = 868,229,826.75 : x
  2. Step 2: Convert to fraction form
    1,318,339,763.55/1,820,818,806.12 = 868,229,826.75/x
  3. Step 3: Cross multiply
    1,318,339,763.55x = 1,820,818,806.12 × 868,229,826.75
  4. Step 4: Simplify right side
    1,318,339,763.55x = 1,580,889,196,580,709,376
  5. Step 5: Solve for x
    x = 1,580,889,196,580,709,376/1,318,339,763.55
  6. Step 6: Final answer
    x = 1,199,151,569.49

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Double scale
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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.