Home / 825,630.41-1,138,886.09-519,220.78

Finding the Fourth Proportional to 825,630.41, 1,138,886.09 and 519,220.78

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Solution

The fourth proportional to 825,630.41, 1,138,886.09 and 519,220.78 is: 716,220.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,630.41 : 1,138,886.09 = 519,220.78 : x
  2. Step 2: Convert to fraction form
    825,630.41/1,138,886.09 = 519,220.78/x
  3. Step 3: Cross multiply
    825,630.41x = 1,138,886.09 × 519,220.78
  4. Step 4: Simplify right side
    825,630.41x = 591,333,320,484.71
  5. Step 5: Solve for x
    x = 591,333,320,484.71/825,630.41
  6. Step 6: Final answer
    x = 716,220.37

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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.