Home / 1,865,010.40-2,797,515.60-978,431.20

Finding the Fourth Proportional to 1,865,010.40, 2,797,515.60 and 978,431.20

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Solution

The fourth proportional to 1,865,010.40, 2,797,515.60 and 978,431.20 is: 1,467,646.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865,010.40 : 2,797,515.60 = 978,431.20 : x
  2. Step 2: Convert to fraction form
    1,865,010.40/2,797,515.60 = 978,431.20/x
  3. Step 3: Cross multiply
    1,865,010.40x = 2,797,515.60 × 978,431.20
  4. Step 4: Simplify right side
    1,865,010.40x = 2,737,176,545,526.72
  5. Step 5: Solve for x
    x = 2,737,176,545,526.72/1,865,010.40
  6. Step 6: Final answer
    x = 1,467,646.80

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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.