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Finding the Fourth Proportional to 669,447.92, 923,854.20 and 367,648.40

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Solution

The fourth proportional to 669,447.92, 923,854.20 and 367,648.40 is: 507,363.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,447.92 : 923,854.20 = 367,648.40 : x
  2. Step 2: Convert to fraction form
    669,447.92/923,854.20 = 367,648.40/x
  3. Step 3: Cross multiply
    669,447.92x = 923,854.20 × 367,648.40
  4. Step 4: Simplify right side
    669,447.92x = 339,653,518,463.28
  5. Step 5: Solve for x
    x = 339,653,518,463.28/669,447.92
  6. Step 6: Final answer
    x = 507,363.62

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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.