Home / 1,114,915,275.40-1,538,147,620.78-638,350,949.18

Finding the Fourth Proportional to 1,114,915,275.40, 1,538,147,620.78 and 638,350,949.18

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Solution

The fourth proportional to 1,114,915,275.40, 1,538,147,620.78 and 638,350,949.18 is: 880,674,985.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,114,915,275.40 : 1,538,147,620.78 = 638,350,949.18 : x
  2. Step 2: Convert to fraction form
    1,114,915,275.40/1,538,147,620.78 = 638,350,949.18/x
  3. Step 3: Cross multiply
    1,114,915,275.40x = 1,538,147,620.78 × 638,350,949.18
  4. Step 4: Simplify right side
    1,114,915,275.40x = 981,877,993,696,507,648
  5. Step 5: Solve for x
    x = 981,877,993,696,507,648/1,114,915,275.40
  6. Step 6: Final answer
    x = 880,674,985.23

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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.