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Finding the Fourth Proportional to 8,364,998.40, 12,559,939.20 and 6,473,875.20

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Solution

The fourth proportional to 8,364,998.40, 12,559,939.20 and 6,473,875.20 is: 9,720,441.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,364,998.40 : 12,559,939.20 = 6,473,875.20 : x
  2. Step 2: Convert to fraction form
    8,364,998.40/12,559,939.20 = 6,473,875.20/x
  3. Step 3: Cross multiply
    8,364,998.40x = 12,559,939.20 × 6,473,875.20
  4. Step 4: Simplify right side
    8,364,998.40x = 81,311,478,900,387.84
  5. Step 5: Solve for x
    x = 81,311,478,900,387.84/8,364,998.40
  6. Step 6: Final answer
    x = 9,720,441.66

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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.