Home / 5,425,312.80-8,137,969.20-1,638,400.80

Finding the Fourth Proportional to 5,425,312.80, 8,137,969.20 and 1,638,400.80

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Solution

The fourth proportional to 5,425,312.80, 8,137,969.20 and 1,638,400.80 is: 2,457,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425,312.80 : 8,137,969.20 = 1,638,400.80 : x
  2. Step 2: Convert to fraction form
    5,425,312.80/8,137,969.20 = 1,638,400.80/x
  3. Step 3: Cross multiply
    5,425,312.80x = 8,137,969.20 × 1,638,400.80
  4. Step 4: Simplify right side
    5,425,312.80x = 13,333,255,247,655.36
  5. Step 5: Solve for x
    x = 13,333,255,247,655.36/5,425,312.80
  6. Step 6: Final answer
    x = 2,457,601.20

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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.