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Finding the Fourth Proportional to 665,545.96, 918,453.40 and 363,739.96

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Solution

The fourth proportional to 665,545.96, 918,453.40 and 363,739.96 is: 501,961.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,545.96 : 918,453.40 = 363,739.96 : x
  2. Step 2: Convert to fraction form
    665,545.96/918,453.40 = 363,739.96/x
  3. Step 3: Cross multiply
    665,545.96x = 918,453.40 × 363,739.96
  4. Step 4: Simplify right side
    665,545.96x = 334,078,202,977.86
  5. Step 5: Solve for x
    x = 334,078,202,977.86/665,545.96
  6. Step 6: Final answer
    x = 501,961.13

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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.