Home / 1,207,224,020.70-1,810,836,031.05-430,895,007.90

Finding the Fourth Proportional to 1,207,224,020.70, 1,810,836,031.05 and 430,895,007.90

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Solution

The fourth proportional to 1,207,224,020.70, 1,810,836,031.05 and 430,895,007.90 is: 646,342,511.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,224,020.70 : 1,810,836,031.05 = 430,895,007.90 : x
  2. Step 2: Convert to fraction form
    1,207,224,020.70/1,810,836,031.05 = 430,895,007.90/x
  3. Step 3: Cross multiply
    1,207,224,020.70x = 1,810,836,031.05 × 430,895,007.90
  4. Step 4: Simplify right side
    1,207,224,020.70x = 780,280,205,904,894,336
  5. Step 5: Solve for x
    x = 780,280,205,904,894,336/1,207,224,020.70
  6. Step 6: Final answer
    x = 646,342,511.85

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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.