Home / 519,985.40-779,747.70-239,588.60

Finding the Fourth Proportional to 519,985.40, 779,747.70 and 239,588.60

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Solution

The fourth proportional to 519,985.40, 779,747.70 and 239,588.60 is: 359,276.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,985.40 : 779,747.70 = 239,588.60 : x
  2. Step 2: Convert to fraction form
    519,985.40/779,747.70 = 239,588.60/x
  3. Step 3: Cross multiply
    519,985.40x = 779,747.70 × 239,588.60
  4. Step 4: Simplify right side
    519,985.40x = 186,818,659,796.22
  5. Step 5: Solve for x
    x = 186,818,659,796.22/519,985.40
  6. Step 6: Final answer
    x = 359,276.74

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.