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Finding the Fourth Proportional to 673,628.96, 928,028.90 and 469,310.30

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Solution

The fourth proportional to 673,628.96, 928,028.90 and 469,310.30 is: 646,548.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,628.96 : 928,028.90 = 469,310.30 : x
  2. Step 2: Convert to fraction form
    673,628.96/928,028.90 = 469,310.30/x
  3. Step 3: Cross multiply
    673,628.96x = 928,028.90 × 469,310.30
  4. Step 4: Simplify right side
    673,628.96x = 435,533,521,467.67
  5. Step 5: Solve for x
    x = 435,533,521,467.67/673,628.96
  6. Step 6: Final answer
    x = 646,548.10

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Double scale
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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.