Home / 1,087,351.20-1,631,026.80-807,415.20

Finding the Fourth Proportional to 1,087,351.20, 1,631,026.80 and 807,415.20

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Solution

The fourth proportional to 1,087,351.20, 1,631,026.80 and 807,415.20 is: 1,211,122.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,351.20 : 1,631,026.80 = 807,415.20 : x
  2. Step 2: Convert to fraction form
    1,087,351.20/1,631,026.80 = 807,415.20/x
  3. Step 3: Cross multiply
    1,087,351.20x = 1,631,026.80 × 807,415.20
  4. Step 4: Simplify right side
    1,087,351.20x = 1,316,915,829,927.36
  5. Step 5: Solve for x
    x = 1,316,915,829,927.36/1,087,351.20
  6. Step 6: Final answer
    x = 1,211,122.80

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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.