Home / 1,419,476.20-2,129,214.30-578,631.40

Finding the Fourth Proportional to 1,419,476.20, 2,129,214.30 and 578,631.40

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Solution

The fourth proportional to 1,419,476.20, 2,129,214.30 and 578,631.40 is: 867,947.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,476.20 : 2,129,214.30 = 578,631.40 : x
  2. Step 2: Convert to fraction form
    1,419,476.20/2,129,214.30 = 578,631.40/x
  3. Step 3: Cross multiply
    1,419,476.20x = 2,129,214.30 × 578,631.40
  4. Step 4: Simplify right side
    1,419,476.20x = 1,232,030,251,309.02
  5. Step 5: Solve for x
    x = 1,232,030,251,309.02/1,419,476.20
  6. Step 6: Final answer
    x = 867,947.10

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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.