Home / 714,215.36-985,632.25-391,922.63

Finding the Fourth Proportional to 714,215.36, 985,632.25 and 391,922.63

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Solution

The fourth proportional to 714,215.36, 985,632.25 and 391,922.63 is: 540,861.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,215.36 : 985,632.25 = 391,922.63 : x
  2. Step 2: Convert to fraction form
    714,215.36/985,632.25 = 391,922.63/x
  3. Step 3: Cross multiply
    714,215.36x = 985,632.25 × 391,922.63
  4. Step 4: Simplify right side
    714,215.36x = 386,291,585,117.09
  5. Step 5: Solve for x
    x = 386,291,585,117.09/714,215.36
  6. Step 6: Final answer
    x = 540,861.50

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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.