Home / 999,941,215.56-1,380,397,368.87-665,969,519.40

Finding the Fourth Proportional to 999,941,215.56, 1,380,397,368.87 and 665,969,519.40

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Solution

The fourth proportional to 999,941,215.56, 1,380,397,368.87 and 665,969,519.40 is: 919,356,616.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,941,215.56 : 1,380,397,368.87 = 665,969,519.40 : x
  2. Step 2: Convert to fraction form
    999,941,215.56/1,380,397,368.87 = 665,969,519.40/x
  3. Step 3: Cross multiply
    999,941,215.56x = 1,380,397,368.87 × 665,969,519.40
  4. Step 4: Simplify right side
    999,941,215.56x = 919,302,572,327,378,304
  5. Step 5: Solve for x
    x = 919,302,572,327,378,304/999,941,215.56
  6. Step 6: Final answer
    x = 919,356,616.19

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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.