Home / 2,688,176.40-4,032,178.20-891,142.80

Finding the Fourth Proportional to 2,688,176.40, 4,032,178.20 and 891,142.80

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Solution

The fourth proportional to 2,688,176.40, 4,032,178.20 and 891,142.80 is: 1,336,685.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688,176.40 : 4,032,178.20 = 891,142.80 : x
  2. Step 2: Convert to fraction form
    2,688,176.40/4,032,178.20 = 891,142.80/x
  3. Step 3: Cross multiply
    2,688,176.40x = 4,032,178.20 × 891,142.80
  4. Step 4: Simplify right side
    2,688,176.40x = 3,593,246,571,246.96
  5. Step 5: Solve for x
    x = 3,593,246,571,246.96/2,688,176.40
  6. Step 6: Final answer
    x = 1,336,685.56

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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.