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Finding the Fourth Proportional to 673,841.40, 929,903.12 and 367,920.44

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Solution

The fourth proportional to 673,841.40, 929,903.12 and 367,920.44 is: 507,731.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,841.40 : 929,903.12 = 367,920.44 : x
  2. Step 2: Convert to fraction form
    673,841.40/929,903.12 = 367,920.44/x
  3. Step 3: Cross multiply
    673,841.40x = 929,903.12 × 367,920.44
  4. Step 4: Simplify right side
    673,841.40x = 342,130,365,067.77
  5. Step 5: Solve for x
    x = 342,130,365,067.77/673,841.40
  6. Step 6: Final answer
    x = 507,731.29

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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.