Home / 719,435.45-992,821.10-397,145.77

Finding the Fourth Proportional to 719,435.45, 992,821.10 and 397,145.77

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Solution

The fourth proportional to 719,435.45, 992,821.10 and 397,145.77 is: 548,061.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,435.45 : 992,821.10 = 397,145.77 : x
  2. Step 2: Convert to fraction form
    719,435.45/992,821.10 = 397,145.77/x
  3. Step 3: Cross multiply
    719,435.45x = 992,821.10 × 397,145.77
  4. Step 4: Simplify right side
    719,435.45x = 394,294,700,231.75
  5. Step 5: Solve for x
    x = 394,294,700,231.75/719,435.45
  6. Step 6: Final answer
    x = 548,061.26

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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.