Home / 1,316,156.80-1,971,470.40-724,489.60

Finding the Fourth Proportional to 1,316,156.80, 1,971,470.40 and 724,489.60

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Solution

The fourth proportional to 1,316,156.80, 1,971,470.40 and 724,489.60 is: 1,085,212.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,156.80 : 1,971,470.40 = 724,489.60 : x
  2. Step 2: Convert to fraction form
    1,316,156.80/1,971,470.40 = 724,489.60/x
  3. Step 3: Cross multiply
    1,316,156.80x = 1,971,470.40 × 724,489.60
  4. Step 4: Simplify right side
    1,316,156.80x = 1,428,309,801,507.84
  5. Step 5: Solve for x
    x = 1,428,309,801,507.84/1,316,156.80
  6. Step 6: Final answer
    x = 1,085,212.49

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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.