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Finding the Fourth Proportional to 673,502.67, 930,206.85 and 490,556.30

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Solution

The fourth proportional to 673,502.67, 930,206.85 and 490,556.30 is: 677,530.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,502.67 : 930,206.85 = 490,556.30 : x
  2. Step 2: Convert to fraction form
    673,502.67/930,206.85 = 490,556.30/x
  3. Step 3: Cross multiply
    673,502.67x = 930,206.85 × 490,556.30
  4. Step 4: Simplify right side
    673,502.67x = 456,318,828,343.96
  5. Step 5: Solve for x
    x = 456,318,828,343.96/673,502.67
  6. Step 6: Final answer
    x = 677,530.84

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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.