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Finding the Fourth Proportional to 2,788,402.80, 4,186,751.40 and 2,158,028.40

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Solution

The fourth proportional to 2,788,402.80, 4,186,751.40 and 2,158,028.40 is: 3,240,252.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788,402.80 : 4,186,751.40 = 2,158,028.40 : x
  2. Step 2: Convert to fraction form
    2,788,402.80/4,186,751.40 = 2,158,028.40/x
  3. Step 3: Cross multiply
    2,788,402.80x = 4,186,751.40 × 2,158,028.40
  4. Step 4: Simplify right side
    2,788,402.80x = 9,035,128,424,939.76
  5. Step 5: Solve for x
    x = 9,035,128,424,939.76/2,788,402.80
  6. Step 6: Final answer
    x = 3,240,252.24

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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.