Home / 679,969,018.70-1,019,953,528.05-219,953,689.10

Finding the Fourth Proportional to 679,969,018.70, 1,019,953,528.05 and 219,953,689.10

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Solution

The fourth proportional to 679,969,018.70, 1,019,953,528.05 and 219,953,689.10 is: 329,930,533.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,969,018.70 : 1,019,953,528.05 = 219,953,689.10 : x
  2. Step 2: Convert to fraction form
    679,969,018.70/1,019,953,528.05 = 219,953,689.10/x
  3. Step 3: Cross multiply
    679,969,018.70x = 1,019,953,528.05 × 219,953,689.10
  4. Step 4: Simplify right side
    679,969,018.70x = 224,342,541,205,157,824
  5. Step 5: Solve for x
    x = 224,342,541,205,157,824/679,969,018.70
  6. Step 6: Final answer
    x = 329,930,533.65

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Double scale
Find fourth proportional to 679,969,019.70, 1,019,953,529.55 and 219,953,690.10
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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.