Home / 1,224,473.20-1,690,231.44-919,430.80

Finding the Fourth Proportional to 1,224,473.20, 1,690,231.44 and 919,430.80

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Solution

The fourth proportional to 1,224,473.20, 1,690,231.44 and 919,430.80 is: 1,269,158.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,473.20 : 1,690,231.44 = 919,430.80 : x
  2. Step 2: Convert to fraction form
    1,224,473.20/1,690,231.44 = 919,430.80/x
  3. Step 3: Cross multiply
    1,224,473.20x = 1,690,231.44 × 919,430.80
  4. Step 4: Simplify right side
    1,224,473.20x = 1,554,050,845,064.35
  5. Step 5: Solve for x
    x = 1,554,050,845,064.35/1,224,473.20
  6. Step 6: Final answer
    x = 1,269,158.72

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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.