Home / 689,275,841.56-1,028,537,809.72-614,988,953.28

Finding the Fourth Proportional to 689,275,841.56, 1,028,537,809.72 and 614,988,953.28

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Solution

The fourth proportional to 689,275,841.56, 1,028,537,809.72 and 614,988,953.28 is: 917,686,872.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,275,841.56 : 1,028,537,809.72 = 614,988,953.28 : x
  2. Step 2: Convert to fraction form
    689,275,841.56/1,028,537,809.72 = 614,988,953.28/x
  3. Step 3: Cross multiply
    689,275,841.56x = 1,028,537,809.72 × 614,988,953.28
  4. Step 4: Simplify right side
    689,275,841.56x = 632,539,391,007,069,056
  5. Step 5: Solve for x
    x = 632,539,391,007,069,056/689,275,841.56
  6. Step 6: Final answer
    x = 917,686,872.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.