Home / 878,136.40-1,317,204.60-864,139.60

Finding the Fourth Proportional to 878,136.40, 1,317,204.60 and 864,139.60

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Solution

The fourth proportional to 878,136.40, 1,317,204.60 and 864,139.60 is: 1,296,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,136.40 : 1,317,204.60 = 864,139.60 : x
  2. Step 2: Convert to fraction form
    878,136.40/1,317,204.60 = 864,139.60/x
  3. Step 3: Cross multiply
    878,136.40x = 1,317,204.60 × 864,139.60
  4. Step 4: Simplify right side
    878,136.40x = 1,138,248,656,162.16
  5. Step 5: Solve for x
    x = 1,138,248,656,162.16/878,136.40
  6. Step 6: Final answer
    x = 1,296,209.40

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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.