Home / 1,188,101.70-1,782,152.55-715,320.90

Finding the Fourth Proportional to 1,188,101.70, 1,782,152.55 and 715,320.90

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Solution

The fourth proportional to 1,188,101.70, 1,782,152.55 and 715,320.90 is: 1,072,981.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,101.70 : 1,782,152.55 = 715,320.90 : x
  2. Step 2: Convert to fraction form
    1,188,101.70/1,782,152.55 = 715,320.90/x
  3. Step 3: Cross multiply
    1,188,101.70x = 1,782,152.55 × 715,320.90
  4. Step 4: Simplify right side
    1,188,101.70x = 1,274,810,966,003.30
  5. Step 5: Solve for x
    x = 1,274,810,966,003.30/1,188,101.70
  6. Step 6: Final answer
    x = 1,072,981.35

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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.