Home / 697,938.40-963,086.97-391,945.20

Finding the Fourth Proportional to 697,938.40, 963,086.97 and 391,945.20

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Solution

The fourth proportional to 697,938.40, 963,086.97 and 391,945.20 is: 540,846.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,938.40 : 963,086.97 = 391,945.20 : x
  2. Step 2: Convert to fraction form
    697,938.40/963,086.97 = 391,945.20/x
  3. Step 3: Cross multiply
    697,938.40x = 963,086.97 × 391,945.20
  4. Step 4: Simplify right side
    697,938.40x = 377,477,315,074.04
  5. Step 5: Solve for x
    x = 377,477,315,074.04/697,938.40
  6. Step 6: Final answer
    x = 540,846.18

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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.