Home / 719,829.12-993,365.76-397,533.28

Finding the Fourth Proportional to 719,829.12, 993,365.76 and 397,533.28

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Solution

The fourth proportional to 719,829.12, 993,365.76 and 397,533.28 is: 548,596.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,829.12 : 993,365.76 = 397,533.28 : x
  2. Step 2: Convert to fraction form
    719,829.12/993,365.76 = 397,533.28/x
  3. Step 3: Cross multiply
    719,829.12x = 993,365.76 × 397,533.28
  4. Step 4: Simplify right side
    719,829.12x = 394,895,948,812.49
  5. Step 5: Solve for x
    x = 394,895,948,812.49/719,829.12
  6. Step 6: Final answer
    x = 548,596.80

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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.