Home / 780,141.40-1,169,337.30-400,915.60

Finding the Fourth Proportional to 780,141.40, 1,169,337.30 and 400,915.60

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Solution

The fourth proportional to 780,141.40, 1,169,337.30 and 400,915.60 is: 600,923.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,141.40 : 1,169,337.30 = 400,915.60 : x
  2. Step 2: Convert to fraction form
    780,141.40/1,169,337.30 = 400,915.60/x
  3. Step 3: Cross multiply
    780,141.40x = 1,169,337.30 × 400,915.60
  4. Step 4: Simplify right side
    780,141.40x = 468,805,565,231.88
  5. Step 5: Solve for x
    x = 468,805,565,231.88/780,141.40
  6. Step 6: Final answer
    x = 600,923.84

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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.