Home / 1,419,475.20-2,129,212.80-578,630.40

Finding the Fourth Proportional to 1,419,475.20, 2,129,212.80 and 578,630.40

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Solution

The fourth proportional to 1,419,475.20, 2,129,212.80 and 578,630.40 is: 867,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,475.20 : 2,129,212.80 = 578,630.40 : x
  2. Step 2: Convert to fraction form
    1,419,475.20/2,129,212.80 = 578,630.40/x
  3. Step 3: Cross multiply
    1,419,475.20x = 2,129,212.80 × 578,630.40
  4. Step 4: Simplify right side
    1,419,475.20x = 1,232,027,254,149.12
  5. Step 5: Solve for x
    x = 1,232,027,254,149.12/1,419,475.20
  6. Step 6: Final answer
    x = 867,945.60

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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.