Home / 719,459.91-992,856.15-397,170.45

Finding the Fourth Proportional to 719,459.91, 992,856.15 and 397,170.45

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Solution

The fourth proportional to 719,459.91, 992,856.15 and 397,170.45 is: 548,096.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,459.91 : 992,856.15 = 397,170.45 : x
  2. Step 2: Convert to fraction form
    719,459.91/992,856.15 = 397,170.45/x
  3. Step 3: Cross multiply
    719,459.91x = 992,856.15 × 397,170.45
  4. Step 4: Simplify right side
    719,459.91x = 394,333,123,880.77
  5. Step 5: Solve for x
    x = 394,333,123,880.77/719,459.91
  6. Step 6: Final answer
    x = 548,096.03

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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.