Home / 711,139.20-1,065,326.40-395,030.40

Finding the Fourth Proportional to 711,139.20, 1,065,326.40 and 395,030.40

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Solution

The fourth proportional to 711,139.20, 1,065,326.40 and 395,030.40 is: 591,777.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139.20 : 1,065,326.40 = 395,030.40 : x
  2. Step 2: Convert to fraction form
    711,139.20/1,065,326.40 = 395,030.40/x
  3. Step 3: Cross multiply
    711,139.20x = 1,065,326.40 × 395,030.40
  4. Step 4: Simplify right side
    711,139.20x = 420,836,313,922.56
  5. Step 5: Solve for x
    x = 420,836,313,922.56/711,139.20
  6. Step 6: Final answer
    x = 591,777.69

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1.5x scale

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.