Home / 1,090,720,911.28-1,505,232,000.84-645,066,298.48

Finding the Fourth Proportional to 1,090,720,911.28, 1,505,232,000.84 and 645,066,298.48

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Solution

The fourth proportional to 1,090,720,911.28, 1,505,232,000.84 and 645,066,298.48 is: 890,213,458.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,720,911.28 : 1,505,232,000.84 = 645,066,298.48 : x
  2. Step 2: Convert to fraction form
    1,090,720,911.28/1,505,232,000.84 = 645,066,298.48/x
  3. Step 3: Cross multiply
    1,090,720,911.28x = 1,505,232,000.84 × 645,066,298.48
  4. Step 4: Simplify right side
    1,090,720,911.28x = 970,974,435,135,502,976
  5. Step 5: Solve for x
    x = 970,974,435,135,502,976/1,090,720,911.28
  6. Step 6: Final answer
    x = 890,213,458.91

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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.