Home / 691,101,009.20-1,036,651,513.80-645,751,377.20

Finding the Fourth Proportional to 691,101,009.20, 1,036,651,513.80 and 645,751,377.20

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Solution

The fourth proportional to 691,101,009.20, 1,036,651,513.80 and 645,751,377.20 is: 968,627,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,101,009.20 : 1,036,651,513.80 = 645,751,377.20 : x
  2. Step 2: Convert to fraction form
    691,101,009.20/1,036,651,513.80 = 645,751,377.20/x
  3. Step 3: Cross multiply
    691,101,009.20x = 1,036,651,513.80 × 645,751,377.20
  4. Step 4: Simplify right side
    691,101,009.20x = 669,419,142,712,814,848
  5. Step 5: Solve for x
    x = 669,419,142,712,814,848/691,101,009.20
  6. Step 6: Final answer
    x = 968,627,065.80

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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.