Home / 830,621.20-1,247,314.20-456,912.40

Finding the Fourth Proportional to 830,621.20, 1,247,314.20 and 456,912.40

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Solution

The fourth proportional to 830,621.20, 1,247,314.20 and 456,912.40 is: 686,129.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,621.20 : 1,247,314.20 = 456,912.40 : x
  2. Step 2: Convert to fraction form
    830,621.20/1,247,314.20 = 456,912.40/x
  3. Step 3: Cross multiply
    830,621.20x = 1,247,314.20 × 456,912.40
  4. Step 4: Simplify right side
    830,621.20x = 569,913,324,676.08
  5. Step 5: Solve for x
    x = 569,913,324,676.08/830,621.20
  6. Step 6: Final answer
    x = 686,129.04

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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.