Home / 971,072,141.81-1,340,202,290.72-636,825,867.80

Finding the Fourth Proportional to 971,072,141.81, 1,340,202,290.72 and 636,825,867.80

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Solution

The fourth proportional to 971,072,141.81, 1,340,202,290.72 and 636,825,867.80 is: 878,900,186.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,072,141.81 : 1,340,202,290.72 = 636,825,867.80 : x
  2. Step 2: Convert to fraction form
    971,072,141.81/1,340,202,290.72 = 636,825,867.80/x
  3. Step 3: Cross multiply
    971,072,141.81x = 1,340,202,290.72 × 636,825,867.80
  4. Step 4: Simplify right side
    971,072,141.81x = 853,475,486,805,426,688
  5. Step 5: Solve for x
    x = 853,475,486,805,426,688/971,072,141.81
  6. Step 6: Final answer
    x = 878,900,186.78

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Double scale
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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.