Home / 766,134.32-1,057,224.56-439,430.54

Finding the Fourth Proportional to 766,134.32, 1,057,224.56 and 439,430.54

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Solution

The fourth proportional to 766,134.32, 1,057,224.56 and 439,430.54 is: 606,390.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,134.32 : 1,057,224.56 = 439,430.54 : x
  2. Step 2: Convert to fraction form
    766,134.32/1,057,224.56 = 439,430.54/x
  3. Step 3: Cross multiply
    766,134.32x = 1,057,224.56 × 439,430.54
  4. Step 4: Simplify right side
    766,134.32x = 464,576,751,818.79
  5. Step 5: Solve for x
    x = 464,576,751,818.79/766,134.32
  6. Step 6: Final answer
    x = 606,390.74

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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.