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Finding the Fourth Proportional to 665,490.33, 918,374.63 and 363,684.33

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Solution

The fourth proportional to 665,490.33, 918,374.63 and 363,684.33 is: 501,883.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,490.33 : 918,374.63 = 363,684.33 : x
  2. Step 2: Convert to fraction form
    665,490.33/918,374.63 = 363,684.33/x
  3. Step 3: Cross multiply
    665,490.33x = 918,374.63 × 363,684.33
  4. Step 4: Simplify right side
    665,490.33x = 333,998,460,182.13
  5. Step 5: Solve for x
    x = 333,998,460,182.13/665,490.33
  6. Step 6: Final answer
    x = 501,883.27

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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.