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Finding the Fourth Proportional to 978,909.84, 1,468,649.07 and 347,872.86

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Solution

The fourth proportional to 978,909.84, 1,468,649.07 and 347,872.86 is: 521,910.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,909.84 : 1,468,649.07 = 347,872.86 : x
  2. Step 2: Convert to fraction form
    978,909.84/1,468,649.07 = 347,872.86/x
  3. Step 3: Cross multiply
    978,909.84x = 1,468,649.07 × 347,872.86
  4. Step 4: Simplify right side
    978,909.84x = 510,903,152,317.24
  5. Step 5: Solve for x
    x = 510,903,152,317.24/978,909.84
  6. Step 6: Final answer
    x = 521,910.32

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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.