Home / 1,272,544,277.92-1,908,888,112.96-387,258,428.59

Finding the Fourth Proportional to 1,272,544,277.92, 1,908,888,112.96 and 387,258,428.59

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Solution

The fourth proportional to 1,272,544,277.92, 1,908,888,112.96 and 387,258,428.59 is: 580,909,461.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,544,277.92 : 1,908,888,112.96 = 387,258,428.59 : x
  2. Step 2: Convert to fraction form
    1,272,544,277.92/1,908,888,112.96 = 387,258,428.59/x
  3. Step 3: Cross multiply
    1,272,544,277.92x = 1,908,888,112.96 × 387,258,428.59
  4. Step 4: Simplify right side
    1,272,544,277.92x = 739,233,010,982,824,064
  5. Step 5: Solve for x
    x = 739,233,010,982,824,064/1,272,544,277.92
  6. Step 6: Final answer
    x = 580,909,461.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.