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Finding the Fourth Proportional to 664,460.70, 917,043.39 and 377,925.45

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Solution

The fourth proportional to 664,460.70, 917,043.39 and 377,925.45 is: 521,586.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,460.70 : 917,043.39 = 377,925.45 : x
  2. Step 2: Convert to fraction form
    664,460.70/917,043.39 = 377,925.45/x
  3. Step 3: Cross multiply
    664,460.70x = 917,043.39 × 377,925.45
  4. Step 4: Simplify right side
    664,460.70x = 346,574,035,835.28
  5. Step 5: Solve for x
    x = 346,574,035,835.28/664,460.70
  6. Step 6: Final answer
    x = 521,586.96

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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.