Home / 1,380,430.46-1,904,701.20-870,837.50

Finding the Fourth Proportional to 1,380,430.46, 1,904,701.20 and 870,837.50

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Solution

The fourth proportional to 1,380,430.46, 1,904,701.20 and 870,837.50 is: 1,201,571.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,430.46 : 1,904,701.20 = 870,837.50 : x
  2. Step 2: Convert to fraction form
    1,380,430.46/1,904,701.20 = 870,837.50/x
  3. Step 3: Cross multiply
    1,380,430.46x = 1,904,701.20 × 870,837.50
  4. Step 4: Simplify right side
    1,380,430.46x = 1,658,685,231,255
  5. Step 5: Solve for x
    x = 1,658,685,231,255/1,380,430.46
  6. Step 6: Final answer
    x = 1,201,571.02

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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.