Home / 1,312,124.40-1,968,964.20-864,129.60

Finding the Fourth Proportional to 1,312,124.40, 1,968,964.20 and 864,129.60

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Solution

The fourth proportional to 1,312,124.40, 1,968,964.20 and 864,129.60 is: 1,296,706.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,124.40 : 1,968,964.20 = 864,129.60 : x
  2. Step 2: Convert to fraction form
    1,312,124.40/1,968,964.20 = 864,129.60/x
  3. Step 3: Cross multiply
    1,312,124.40x = 1,968,964.20 × 864,129.60
  4. Step 4: Simplify right side
    1,312,124.40x = 1,701,440,246,560.32
  5. Step 5: Solve for x
    x = 1,701,440,246,560.32/1,312,124.40
  6. Step 6: Final answer
    x = 1,296,706.51

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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.