Home / 725,030.60-1,086,728.50-345,640.77

Finding the Fourth Proportional to 725,030.60, 1,086,728.50 and 345,640.77

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Solution

The fourth proportional to 725,030.60, 1,086,728.50 and 345,640.77 is: 518,071.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,030.60 : 1,086,728.50 = 345,640.77 : x
  2. Step 2: Convert to fraction form
    725,030.60/1,086,728.50 = 345,640.77/x
  3. Step 3: Cross multiply
    725,030.60x = 1,086,728.50 × 345,640.77
  4. Step 4: Simplify right side
    725,030.60x = 375,617,675,953.00
  5. Step 5: Solve for x
    x = 375,617,675,953.00/725,030.60
  6. Step 6: Final answer
    x = 518,071.48

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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.