Home / 728,954,037.19-1,005,585,970.11-442,769,407.60

Finding the Fourth Proportional to 728,954,037.19, 1,005,585,970.11 and 442,769,407.60

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Solution

The fourth proportional to 728,954,037.19, 1,005,585,970.11 and 442,769,407.60 is: 610,796,677.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,954,037.19 : 1,005,585,970.11 = 442,769,407.60 : x
  2. Step 2: Convert to fraction form
    728,954,037.19/1,005,585,970.11 = 442,769,407.60/x
  3. Step 3: Cross multiply
    728,954,037.19x = 1,005,585,970.11 × 442,769,407.60
  4. Step 4: Simplify right side
    728,954,037.19x = 445,242,704,277,933,568
  5. Step 5: Solve for x
    x = 445,242,704,277,933,568/728,954,037.19
  6. Step 6: Final answer
    x = 610,796,677.93

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Double scale
Find fourth proportional to 728,954,038.19, 1,005,585,971.49 and 442,769,408.60
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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.