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Finding the Fourth Proportional to 459,435.34, 688,682.79 and 447,909.85

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Solution

The fourth proportional to 459,435.34, 688,682.79 and 447,909.85 is: 671,406.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,435.34 : 688,682.79 = 447,909.85 : x
  2. Step 2: Convert to fraction form
    459,435.34/688,682.79 = 447,909.85/x
  3. Step 3: Cross multiply
    459,435.34x = 688,682.79 × 447,909.85
  4. Step 4: Simplify right side
    459,435.34x = 308,467,805,166.48
  5. Step 5: Solve for x
    x = 308,467,805,166.48/459,435.34
  6. Step 6: Final answer
    x = 671,406.35

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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.