Home / 3,612,919.31-4,985,370.39-1,980,897.21

Finding the Fourth Proportional to 3,612,919.31, 4,985,370.39 and 1,980,897.21

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Solution

The fourth proportional to 3,612,919.31, 4,985,370.39 and 1,980,897.21 is: 2,733,386.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612,919.31 : 4,985,370.39 = 1,980,897.21 : x
  2. Step 2: Convert to fraction form
    3,612,919.31/4,985,370.39 = 1,980,897.21/x
  3. Step 3: Cross multiply
    3,612,919.31x = 4,985,370.39 × 1,980,897.21
  4. Step 4: Simplify right side
    3,612,919.31x = 9,875,506,301,319.86
  5. Step 5: Solve for x
    x = 9,875,506,301,319.86/3,612,919.31
  6. Step 6: Final answer
    x = 2,733,386.90

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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.