Home / 1,311,884.20-1,967,826.30-425,420.20

Finding the Fourth Proportional to 1,311,884.20, 1,967,826.30 and 425,420.20

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Solution

The fourth proportional to 1,311,884.20, 1,967,826.30 and 425,420.20 is: 638,130.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,884.20 : 1,967,826.30 = 425,420.20 : x
  2. Step 2: Convert to fraction form
    1,311,884.20/1,967,826.30 = 425,420.20/x
  3. Step 3: Cross multiply
    1,311,884.20x = 1,967,826.30 × 425,420.20
  4. Step 4: Simplify right side
    1,311,884.20x = 837,153,058,111.26
  5. Step 5: Solve for x
    x = 837,153,058,111.26/1,311,884.20
  6. Step 6: Final answer
    x = 638,130.30

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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.