Home / 8,640,026.40-12,960,039.60-6,400,538.40

Finding the Fourth Proportional to 8,640,026.40, 12,960,039.60 and 6,400,538.40

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Solution

The fourth proportional to 8,640,026.40, 12,960,039.60 and 6,400,538.40 is: 9,600,807.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640,026.40 : 12,960,039.60 = 6,400,538.40 : x
  2. Step 2: Convert to fraction form
    8,640,026.40/12,960,039.60 = 6,400,538.40/x
  3. Step 3: Cross multiply
    8,640,026.40x = 12,960,039.60 × 6,400,538.40
  4. Step 4: Simplify right side
    8,640,026.40x = 82,951,231,125,320.64
  5. Step 5: Solve for x
    x = 82,951,231,125,320.64/8,640,026.40
  6. Step 6: Final answer
    x = 9,600,807.60

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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.