Home / 931,901.60-1,398,889.20-511,997.60

Finding the Fourth Proportional to 931,901.60, 1,398,889.20 and 511,997.60

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Solution

The fourth proportional to 931,901.60, 1,398,889.20 and 511,997.60 is: 768,566.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,901.60 : 1,398,889.20 = 511,997.60 : x
  2. Step 2: Convert to fraction form
    931,901.60/1,398,889.20 = 511,997.60/x
  3. Step 3: Cross multiply
    931,901.60x = 1,398,889.20 × 511,997.60
  4. Step 4: Simplify right side
    931,901.60x = 716,227,913,065.92
  5. Step 5: Solve for x
    x = 716,227,913,065.92/931,901.60
  6. Step 6: Final answer
    x = 768,566.03

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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.