Home / 719,313.67-992,650.95-397,021.55

Finding the Fourth Proportional to 719,313.67, 992,650.95 and 397,021.55

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Solution

The fourth proportional to 719,313.67, 992,650.95 and 397,021.55 is: 547,888.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,313.67 : 992,650.95 = 397,021.55 : x
  2. Step 2: Convert to fraction form
    719,313.67/992,650.95 = 397,021.55/x
  3. Step 3: Cross multiply
    719,313.67x = 992,650.95 × 397,021.55
  4. Step 4: Simplify right side
    719,313.67x = 394,103,819,398.38
  5. Step 5: Solve for x
    x = 394,103,819,398.38/719,313.67
  6. Step 6: Final answer
    x = 547,888.69

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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.