Home / 1,411,014,489.15-2,116,384,970.13-428,449,665.33

Finding the Fourth Proportional to 1,411,014,489.15, 2,116,384,970.13 and 428,449,665.33

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Solution

The fourth proportional to 1,411,014,489.15, 2,116,384,970.13 and 428,449,665.33 is: 642,632,970.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411,014,489.15 : 2,116,384,970.13 = 428,449,665.33 : x
  2. Step 2: Convert to fraction form
    1,411,014,489.15/2,116,384,970.13 = 428,449,665.33/x
  3. Step 3: Cross multiply
    1,411,014,489.15x = 2,116,384,970.13 × 428,449,665.33
  4. Step 4: Simplify right side
    1,411,014,489.15x = 906,764,432,161,640,576
  5. Step 5: Solve for x
    x = 906,764,432,161,640,576/1,411,014,489.15
  6. Step 6: Final answer
    x = 642,632,970.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.