Home / 728,954,037.38-1,005,585,970.37-442,769,407.79

Finding the Fourth Proportional to 728,954,037.38, 1,005,585,970.37 and 442,769,407.79

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Solution

The fourth proportional to 728,954,037.38, 1,005,585,970.37 and 442,769,407.79 is: 610,796,678.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,954,037.38 : 1,005,585,970.37 = 442,769,407.79 : x
  2. Step 2: Convert to fraction form
    728,954,037.38/1,005,585,970.37 = 442,769,407.79/x
  3. Step 3: Cross multiply
    728,954,037.38x = 1,005,585,970.37 × 442,769,407.79
  4. Step 4: Simplify right side
    728,954,037.38x = 445,242,704,578,736,384
  5. Step 5: Solve for x
    x = 445,242,704,578,736,384/728,954,037.38
  6. Step 6: Final answer
    x = 610,796,678.18

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Double scale
Find fourth proportional to 728,954,038.38, 1,005,585,971.75 and 442,769,408.79
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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.