Home / 971,072,124.55-1,340,202,266.90-636,825,850.54

Finding the Fourth Proportional to 971,072,124.55, 1,340,202,266.90 and 636,825,850.54

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Solution

The fourth proportional to 971,072,124.55, 1,340,202,266.90 and 636,825,850.54 is: 878,900,162.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,072,124.55 : 1,340,202,266.90 = 636,825,850.54 : x
  2. Step 2: Convert to fraction form
    971,072,124.55/1,340,202,266.90 = 636,825,850.54/x
  3. Step 3: Cross multiply
    971,072,124.55x = 1,340,202,266.90 × 636,825,850.54
  4. Step 4: Simplify right side
    971,072,124.55x = 853,475,448,510,113,920
  5. Step 5: Solve for x
    x = 853,475,448,510,113,920/971,072,124.55
  6. Step 6: Final answer
    x = 878,900,162.96

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Double scale
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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.