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Finding the Fourth Proportional to 806,636.88, 1,210,703.00 and 407,558.13

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Solution

The fourth proportional to 806,636.88, 1,210,703.00 and 407,558.13 is: 611,714.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,636.88 : 1,210,703.00 = 407,558.13 : x
  2. Step 2: Convert to fraction form
    806,636.88/1,210,703.00 = 407,558.13/x
  3. Step 3: Cross multiply
    806,636.88x = 1,210,703.00 × 407,558.13
  4. Step 4: Simplify right side
    806,636.88x = 493,431,853,190.18
  5. Step 5: Solve for x
    x = 493,431,853,190.18/806,636.88
  6. Step 6: Final answer
    x = 611,714.97

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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.