Home / 830,546.20-1,247,201.70-456,837.40

Finding the Fourth Proportional to 830,546.20, 1,247,201.70 and 456,837.40

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Solution

The fourth proportional to 830,546.20, 1,247,201.70 and 456,837.40 is: 686,016.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,546.20 : 1,247,201.70 = 456,837.40 : x
  2. Step 2: Convert to fraction form
    830,546.20/1,247,201.70 = 456,837.40/x
  3. Step 3: Cross multiply
    830,546.20x = 1,247,201.70 × 456,837.40
  4. Step 4: Simplify right side
    830,546.20x = 569,768,381,903.58
  5. Step 5: Solve for x
    x = 569,768,381,903.58/830,546.20
  6. Step 6: Final answer
    x = 686,016.48

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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.