Home / 1,090,720,875.28-1,505,231,951.16-645,066,262.48

Finding the Fourth Proportional to 1,090,720,875.28, 1,505,231,951.16 and 645,066,262.48

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Solution

The fourth proportional to 1,090,720,875.28, 1,505,231,951.16 and 645,066,262.48 is: 890,213,409.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,720,875.28 : 1,505,231,951.16 = 645,066,262.48 : x
  2. Step 2: Convert to fraction form
    1,090,720,875.28/1,505,231,951.16 = 645,066,262.48/x
  3. Step 3: Cross multiply
    1,090,720,875.28x = 1,505,231,951.16 × 645,066,262.48
  4. Step 4: Simplify right side
    1,090,720,875.28x = 970,974,348,900,259,200
  5. Step 5: Solve for x
    x = 970,974,348,900,259,200/1,090,720,875.28
  6. Step 6: Final answer
    x = 890,213,409.23

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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.