Home / 719,436.39-992,829.21-397,139.55

Finding the Fourth Proportional to 719,436.39, 992,829.21 and 397,139.55

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Solution

The fourth proportional to 719,436.39, 992,829.21 and 397,139.55 is: 548,056.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,436.39 : 992,829.21 = 397,139.55 : x
  2. Step 2: Convert to fraction form
    719,436.39/992,829.21 = 397,139.55/x
  3. Step 3: Cross multiply
    719,436.39x = 992,829.21 × 397,139.55
  4. Step 4: Simplify right side
    719,436.39x = 394,291,745,686.26
  5. Step 5: Solve for x
    x = 394,291,745,686.26/719,436.39
  6. Step 6: Final answer
    x = 548,056.44

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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.