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Finding the Fourth Proportional to 1,390,244.80, 1,941,618.80 and 1,390,244.80

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Solution

The fourth proportional to 1,390,244.80, 1,941,618.80 and 1,390,244.80 is: 1,941,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,244.80 : 1,941,618.80 = 1,390,244.80 : x
  2. Step 2: Convert to fraction form
    1,390,244.80/1,941,618.80 = 1,390,244.80/x
  3. Step 3: Cross multiply
    1,390,244.80x = 1,941,618.80 × 1,390,244.80
  4. Step 4: Simplify right side
    1,390,244.80x = 2,699,325,440,282.24
  5. Step 5: Solve for x
    x = 2,699,325,440,282.24/1,390,244.80
  6. Step 6: Final answer
    x = 1,941,618.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.