Home / 1,398,501,895.68-1,929,921,738.24-771,970,523.52

Finding the Fourth Proportional to 1,398,501,895.68, 1,929,921,738.24 and 771,970,523.52

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Solution

The fourth proportional to 1,398,501,895.68, 1,929,921,738.24 and 771,970,523.52 is: 1,065,313,317.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,501,895.68 : 1,929,921,738.24 = 771,970,523.52 : x
  2. Step 2: Convert to fraction form
    1,398,501,895.68/1,929,921,738.24 = 771,970,523.52/x
  3. Step 3: Cross multiply
    1,398,501,895.68x = 1,929,921,738.24 × 771,970,523.52
  4. Step 4: Simplify right side
    1,398,501,895.68x = 1,489,842,694,621,761,280
  5. Step 5: Solve for x
    x = 1,489,842,694,621,761,280/1,398,501,895.68
  6. Step 6: Final answer
    x = 1,065,313,317.93

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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.