Home / 919,962.40-1,379,943.60-878,628.10

Finding the Fourth Proportional to 919,962.40, 1,379,943.60 and 878,628.10

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Solution

The fourth proportional to 919,962.40, 1,379,943.60 and 878,628.10 is: 1,317,942.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,962.40 : 1,379,943.60 = 878,628.10 : x
  2. Step 2: Convert to fraction form
    919,962.40/1,379,943.60 = 878,628.10/x
  3. Step 3: Cross multiply
    919,962.40x = 1,379,943.60 × 878,628.10
  4. Step 4: Simplify right side
    919,962.40x = 1,212,457,223,375.16
  5. Step 5: Solve for x
    x = 1,212,457,223,375.16/919,962.40
  6. Step 6: Final answer
    x = 1,317,942.15

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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.