Home / 719,261.69-992,576.24-396,971.78

Finding the Fourth Proportional to 719,261.69, 992,576.24 and 396,971.78

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Solution

The fourth proportional to 719,261.69, 992,576.24 and 396,971.78 is: 547,818.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,261.69 : 992,576.24 = 396,971.78 : x
  2. Step 2: Convert to fraction form
    719,261.69/992,576.24 = 396,971.78/x
  3. Step 3: Cross multiply
    719,261.69x = 992,576.24 × 396,971.78
  4. Step 4: Simplify right side
    719,261.69x = 394,024,749,830.77
  5. Step 5: Solve for x
    x = 394,024,749,830.77/719,261.69
  6. Step 6: Final answer
    x = 547,818.35

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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.