Home / 980,720.13-1,353,428.42-550,991.64

Finding the Fourth Proportional to 980,720.13, 1,353,428.42 and 550,991.64

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Solution

The fourth proportional to 980,720.13, 1,353,428.42 and 550,991.64 is: 760,387.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,720.13 : 1,353,428.42 = 550,991.64 : x
  2. Step 2: Convert to fraction form
    980,720.13/1,353,428.42 = 550,991.64/x
  3. Step 3: Cross multiply
    980,720.13x = 1,353,428.42 × 550,991.64
  4. Step 4: Simplify right side
    980,720.13x = 745,727,742,003.45
  5. Step 5: Solve for x
    x = 745,727,742,003.45/980,720.13
  6. Step 6: Final answer
    x = 760,387.92

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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.