Home / 728,954,036.72-1,005,585,969.47-442,769,407.13

Finding the Fourth Proportional to 728,954,036.72, 1,005,585,969.47 and 442,769,407.13

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Solution

The fourth proportional to 728,954,036.72, 1,005,585,969.47 and 442,769,407.13 is: 610,796,677.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,954,036.72 : 1,005,585,969.47 = 442,769,407.13 : x
  2. Step 2: Convert to fraction form
    728,954,036.72/1,005,585,969.47 = 442,769,407.13/x
  3. Step 3: Cross multiply
    728,954,036.72x = 1,005,585,969.47 × 442,769,407.13
  4. Step 4: Simplify right side
    728,954,036.72x = 445,242,703,520,328,128
  5. Step 5: Solve for x
    x = 445,242,703,520,328,128/728,954,036.72
  6. Step 6: Final answer
    x = 610,796,677.28

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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.