Home / 1,118,742.60-1,678,356.90-408,769.50

Finding the Fourth Proportional to 1,118,742.60, 1,678,356.90 and 408,769.50

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Solution

The fourth proportional to 1,118,742.60, 1,678,356.90 and 408,769.50 is: 613,243.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,742.60 : 1,678,356.90 = 408,769.50 : x
  2. Step 2: Convert to fraction form
    1,118,742.60/1,678,356.90 = 408,769.50/x
  3. Step 3: Cross multiply
    1,118,742.60x = 1,678,356.90 × 408,769.50
  4. Step 4: Simplify right side
    1,118,742.60x = 686,061,110,834.55
  5. Step 5: Solve for x
    x = 686,061,110,834.55/1,118,742.60
  6. Step 6: Final answer
    x = 613,243.04

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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.