Home / 1,087,730.80-1,631,596.20-687,072.40

Finding the Fourth Proportional to 1,087,730.80, 1,631,596.20 and 687,072.40

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Solution

The fourth proportional to 1,087,730.80, 1,631,596.20 and 687,072.40 is: 1,030,608.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,730.80 : 1,631,596.20 = 687,072.40 : x
  2. Step 2: Convert to fraction form
    1,087,730.80/1,631,596.20 = 687,072.40/x
  3. Step 3: Cross multiply
    1,087,730.80x = 1,631,596.20 × 687,072.40
  4. Step 4: Simplify right side
    1,087,730.80x = 1,121,024,716,964.88
  5. Step 5: Solve for x
    x = 1,121,024,716,964.88/1,087,730.80
  6. Step 6: Final answer
    x = 1,030,608.60

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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.