Home / 1,539,311.80-2,309,623.80-971,129.20

Finding the Fourth Proportional to 1,539,311.80, 2,309,623.80 and 971,129.20

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Solution

The fourth proportional to 1,539,311.80, 2,309,623.80 and 971,129.20 is: 1,457,107.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539,311.80 : 2,309,623.80 = 971,129.20 : x
  2. Step 2: Convert to fraction form
    1,539,311.80/2,309,623.80 = 971,129.20/x
  3. Step 3: Cross multiply
    1,539,311.80x = 2,309,623.80 × 971,129.20
  4. Step 4: Simplify right side
    1,539,311.80x = 2,242,943,113,194.96
  5. Step 5: Solve for x
    x = 2,242,943,113,194.96/1,539,311.80
  6. Step 6: Final answer
    x = 1,457,107.72

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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.