Home / 719,664.79-993,141.62-397,368.79

Finding the Fourth Proportional to 719,664.79, 993,141.62 and 397,368.79

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Solution

The fourth proportional to 719,664.79, 993,141.62 and 397,368.79 is: 548,371.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,664.79 : 993,141.62 = 397,368.79 : x
  2. Step 2: Convert to fraction form
    719,664.79/993,141.62 = 397,368.79/x
  3. Step 3: Cross multiply
    719,664.79x = 993,141.62 × 397,368.79
  4. Step 4: Simplify right side
    719,664.79x = 394,643,483,838.04
  5. Step 5: Solve for x
    x = 394,643,483,838.04/719,664.79
  6. Step 6: Final answer
    x = 548,371.25

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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.