Home / 3,781,447.12-5,220,323.40-2,920,073.68

Finding the Fourth Proportional to 3,781,447.12, 5,220,323.40 and 2,920,073.68

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Solution

The fourth proportional to 3,781,447.12, 5,220,323.40 and 2,920,073.68 is: 4,031,189.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781,447.12 : 5,220,323.40 = 2,920,073.68 : x
  2. Step 2: Convert to fraction form
    3,781,447.12/5,220,323.40 = 2,920,073.68/x
  3. Step 3: Cross multiply
    3,781,447.12x = 5,220,323.40 × 2,920,073.68
  4. Step 4: Simplify right side
    3,781,447.12x = 15,243,728,961,428.11
  5. Step 5: Solve for x
    x = 15,243,728,961,428.11/3,781,447.12
  6. Step 6: Final answer
    x = 4,031,189.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.