Home / 971,072,142.81-1,340,202,292.10-636,825,868.80

Finding the Fourth Proportional to 971,072,142.81, 1,340,202,292.10 and 636,825,868.80

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Solution

The fourth proportional to 971,072,142.81, 1,340,202,292.10 and 636,825,868.80 is: 878,900,188.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,072,142.81 : 1,340,202,292.10 = 636,825,868.80 : x
  2. Step 2: Convert to fraction form
    971,072,142.81/1,340,202,292.10 = 636,825,868.80/x
  3. Step 3: Cross multiply
    971,072,142.81x = 1,340,202,292.10 × 636,825,868.80
  4. Step 4: Simplify right side
    971,072,142.81x = 853,475,489,034,333,696
  5. Step 5: Solve for x
    x = 853,475,489,034,333,696/971,072,142.81
  6. Step 6: Final answer
    x = 878,900,188.16

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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.