Home / 8,640,026.90-12,960,040.35-6,400,538.90

Finding the Fourth Proportional to 8,640,026.90, 12,960,040.35 and 6,400,538.90

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Solution

The fourth proportional to 8,640,026.90, 12,960,040.35 and 6,400,538.90 is: 9,600,808.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640,026.90 : 12,960,040.35 = 6,400,538.90 : x
  2. Step 2: Convert to fraction form
    8,640,026.90/12,960,040.35 = 6,400,538.90/x
  3. Step 3: Cross multiply
    8,640,026.90x = 12,960,040.35 × 6,400,538.90
  4. Step 4: Simplify right side
    8,640,026.90x = 82,951,242,405,744.62
  5. Step 5: Solve for x
    x = 82,951,242,405,744.62/8,640,026.90
  6. Step 6: Final answer
    x = 9,600,808.35

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Similar ratio
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1.5x scale

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.