Home / 905,809.09-1,250,019.14-518,630.45

Finding the Fourth Proportional to 905,809.09, 1,250,019.14 and 518,630.45

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Solution

The fourth proportional to 905,809.09, 1,250,019.14 and 518,630.45 is: 715,711.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,809.09 : 1,250,019.14 = 518,630.45 : x
  2. Step 2: Convert to fraction form
    905,809.09/1,250,019.14 = 518,630.45/x
  3. Step 3: Cross multiply
    905,809.09x = 1,250,019.14 × 518,630.45
  4. Step 4: Simplify right side
    905,809.09x = 648,297,986,876.00
  5. Step 5: Solve for x
    x = 648,297,986,876.00/905,809.09
  6. Step 6: Final answer
    x = 715,711.51

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1.5x scale

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.