Home / 712,220,669.51-982,919,049.89-448,129,036.17

Finding the Fourth Proportional to 712,220,669.51, 982,919,049.89 and 448,129,036.17

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Solution

The fourth proportional to 712,220,669.51, 982,919,049.89 and 448,129,036.17 is: 618,452,377.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,220,669.51 : 982,919,049.89 = 448,129,036.17 : x
  2. Step 2: Convert to fraction form
    712,220,669.51/982,919,049.89 = 448,129,036.17/x
  3. Step 3: Cross multiply
    712,220,669.51x = 982,919,049.89 × 448,129,036.17
  4. Step 4: Simplify right side
    712,220,669.51x = 440,474,566,458,097,216
  5. Step 5: Solve for x
    x = 440,474,566,458,097,216/712,220,669.51
  6. Step 6: Final answer
    x = 618,452,377.64

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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.