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Finding the Fourth Proportional to 673,636.98, 928,039.92 and 469,318.32

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Solution

The fourth proportional to 673,636.98, 928,039.92 and 469,318.32 is: 646,559.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,636.98 : 928,039.92 = 469,318.32 : x
  2. Step 2: Convert to fraction form
    673,636.98/928,039.92 = 469,318.32/x
  3. Step 3: Cross multiply
    673,636.98x = 928,039.92 × 469,318.32
  4. Step 4: Simplify right side
    673,636.98x = 435,546,136,147.33
  5. Step 5: Solve for x
    x = 435,546,136,147.33/673,636.98
  6. Step 6: Final answer
    x = 646,559.12

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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.