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Finding the Fourth Proportional to 1,398,605,703.58, 1,930,066,052.39 and 763,526,195.32

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Solution

The fourth proportional to 1,398,605,703.58, 1,930,066,052.39 and 763,526,195.32 is: 1,053,660,789.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,605,703.58 : 1,930,066,052.39 = 763,526,195.32 : x
  2. Step 2: Convert to fraction form
    1,398,605,703.58/1,930,066,052.39 = 763,526,195.32/x
  3. Step 3: Cross multiply
    1,398,605,703.58x = 1,930,066,052.39 × 763,526,195.32
  4. Step 4: Simplify right side
    1,398,605,703.58x = 1,473,655,989,697,628,672
  5. Step 5: Solve for x
    x = 1,473,655,989,697,628,672/1,398,605,703.58
  6. Step 6: Final answer
    x = 1,053,660,789.40

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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.