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Finding the Fourth Proportional to 469,614.12, 648,126 and 308,602.32

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Solution

The fourth proportional to 469,614.12, 648,126 and 308,602.32 is: 425,909.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,614.12 : 648,126 = 308,602.32 : x
  2. Step 2: Convert to fraction form
    469,614.12/648,126 = 308,602.32/x
  3. Step 3: Cross multiply
    469,614.12x = 648,126 × 308,602.32
  4. Step 4: Simplify right side
    469,614.12x = 200,013,187,252.32
  5. Step 5: Solve for x
    x = 200,013,187,252.32/469,614.12
  6. Step 6: Final answer
    x = 425,909.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.