Home / 719,528.96-992,983.20-397,284.80

Finding the Fourth Proportional to 719,528.96, 992,983.20 and 397,284.80

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Solution

The fourth proportional to 719,528.96, 992,983.20 and 397,284.80 is: 548,271.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,528.96 : 992,983.20 = 397,284.80 : x
  2. Step 2: Convert to fraction form
    719,528.96/992,983.20 = 397,284.80/x
  3. Step 3: Cross multiply
    719,528.96x = 992,983.20 × 397,284.80
  4. Step 4: Simplify right side
    719,528.96x = 394,497,132,015.36
  5. Step 5: Solve for x
    x = 394,497,132,015.36/719,528.96
  6. Step 6: Final answer
    x = 548,271.37

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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.