Home / 898,410,887.28-1,239,594,549.48-521,843,723.28

Finding the Fourth Proportional to 898,410,887.28, 1,239,594,549.48 and 521,843,723.28

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Solution

The fourth proportional to 898,410,887.28, 1,239,594,549.48 and 521,843,723.28 is: 720,020,921.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,410,887.28 : 1,239,594,549.48 = 521,843,723.28 : x
  2. Step 2: Convert to fraction form
    898,410,887.28/1,239,594,549.48 = 521,843,723.28/x
  3. Step 3: Cross multiply
    898,410,887.28x = 1,239,594,549.48 × 521,843,723.28
  4. Step 4: Simplify right side
    898,410,887.28x = 646,874,635,058,237,312
  5. Step 5: Solve for x
    x = 646,874,635,058,237,312/898,410,887.28
  6. Step 6: Final answer
    x = 720,020,921.63

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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.