Home / 1,311,916,576.89-1,810,466,385.24-783,326,754.21

Finding the Fourth Proportional to 1,311,916,576.89, 1,810,466,385.24 and 783,326,754.21

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Solution

The fourth proportional to 1,311,916,576.89, 1,810,466,385.24 and 783,326,754.21 is: 1,081,003,763.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,916,576.89 : 1,810,466,385.24 = 783,326,754.21 : x
  2. Step 2: Convert to fraction form
    1,311,916,576.89/1,810,466,385.24 = 783,326,754.21/x
  3. Step 3: Cross multiply
    1,311,916,576.89x = 1,810,466,385.24 × 783,326,754.21
  4. Step 4: Simplify right side
    1,311,916,576.89x = 1,418,186,757,156,360,704
  5. Step 5: Solve for x
    x = 1,418,186,757,156,360,704/1,311,916,576.89
  6. Step 6: Final answer
    x = 1,081,003,763.61

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Double scale
Find fourth proportional to 1,311,916,577.89, 1,810,466,386.62 and 783,326,755.21
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1.5x scale

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.