Home / 971,072,143.81-1,340,202,293.48-636,825,869.80

Finding the Fourth Proportional to 971,072,143.81, 1,340,202,293.48 and 636,825,869.80

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Solution

The fourth proportional to 971,072,143.81, 1,340,202,293.48 and 636,825,869.80 is: 878,900,189.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,072,143.81 : 1,340,202,293.48 = 636,825,869.80 : x
  2. Step 2: Convert to fraction form
    971,072,143.81/1,340,202,293.48 = 636,825,869.80/x
  3. Step 3: Cross multiply
    971,072,143.81x = 1,340,202,293.48 × 636,825,869.80
  4. Step 4: Simplify right side
    971,072,143.81x = 853,475,491,253,355,776
  5. Step 5: Solve for x
    x = 853,475,491,253,355,776/971,072,143.81
  6. Step 6: Final answer
    x = 878,900,189.54

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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.