Home / 719,359.12-992,715.70-397,069.36

Finding the Fourth Proportional to 719,359.12, 992,715.70 and 397,069.36

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Solution

The fourth proportional to 719,359.12, 992,715.70 and 397,069.36 is: 547,955.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,359.12 : 992,715.70 = 397,069.36 : x
  2. Step 2: Convert to fraction form
    719,359.12/992,715.70 = 397,069.36/x
  3. Step 3: Cross multiply
    719,359.12x = 992,715.70 × 397,069.36
  4. Step 4: Simplify right side
    719,359.12x = 394,176,987,660.95
  5. Step 5: Solve for x
    x = 394,176,987,660.95/719,359.12
  6. Step 6: Final answer
    x = 547,955.78

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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.