Home / 992,131.74-1,369,817.73-665,933.40

Finding the Fourth Proportional to 992,131.74, 1,369,817.73 and 665,933.40

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Solution

The fourth proportional to 992,131.74, 1,369,817.73 and 665,933.40 is: 919,441.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,131.74 : 1,369,817.73 = 665,933.40 : x
  2. Step 2: Convert to fraction form
    992,131.74/1,369,817.73 = 665,933.40/x
  3. Step 3: Cross multiply
    992,131.74x = 1,369,817.73 × 665,933.40
  4. Step 4: Simplify right side
    992,131.74x = 912,207,378,319.18
  5. Step 5: Solve for x
    x = 912,207,378,319.18/992,131.74
  6. Step 6: Final answer
    x = 919,441.79

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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.