Home / 999,039.20-1,378,800.36-655,164.50

Finding the Fourth Proportional to 999,039.20, 1,378,800.36 and 655,164.50

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Solution

The fourth proportional to 999,039.20, 1,378,800.36 and 655,164.50 is: 904,209.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,039.20 : 1,378,800.36 = 655,164.50 : x
  2. Step 2: Convert to fraction form
    999,039.20/1,378,800.36 = 655,164.50/x
  3. Step 3: Cross multiply
    999,039.20x = 1,378,800.36 × 655,164.50
  4. Step 4: Simplify right side
    999,039.20x = 903,341,048,459.22
  5. Step 5: Solve for x
    x = 903,341,048,459.22/999,039.20
  6. Step 6: Final answer
    x = 904,209.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.