Home / 1,188,970.12-1,783,513.50-478,902.28

Finding the Fourth Proportional to 1,188,970.12, 1,783,513.50 and 478,902.28

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Solution

The fourth proportional to 1,188,970.12, 1,783,513.50 and 478,902.28 is: 718,376.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,970.12 : 1,783,513.50 = 478,902.28 : x
  2. Step 2: Convert to fraction form
    1,188,970.12/1,783,513.50 = 478,902.28/x
  3. Step 3: Cross multiply
    1,188,970.12x = 1,783,513.50 × 478,902.28
  4. Step 4: Simplify right side
    1,188,970.12x = 854,128,681,560.78
  5. Step 5: Solve for x
    x = 854,128,681,560.78/1,188,970.12
  6. Step 6: Final answer
    x = 718,376.91

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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.