Home / 719,465.47-992,865.53-397,178.22

Finding the Fourth Proportional to 719,465.47, 992,865.53 and 397,178.22

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Solution

The fourth proportional to 719,465.47, 992,865.53 and 397,178.22 is: 548,107.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,465.47 : 992,865.53 = 397,178.22 : x
  2. Step 2: Convert to fraction form
    719,465.47/992,865.53 = 397,178.22/x
  3. Step 3: Cross multiply
    719,465.47x = 992,865.53 × 397,178.22
  4. Step 4: Simplify right side
    719,465.47x = 394,344,560,801.95
  5. Step 5: Solve for x
    x = 394,344,560,801.95/719,465.47
  6. Step 6: Final answer
    x = 548,107.69

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Double scale
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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.