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Finding the Fourth Proportional to 665,335.25, 918,162.65 and 363,529.25

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Solution

The fourth proportional to 665,335.25, 918,162.65 and 363,529.25 is: 501,670.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,335.25 : 918,162.65 = 363,529.25 : x
  2. Step 2: Convert to fraction form
    665,335.25/918,162.65 = 363,529.25/x
  3. Step 3: Cross multiply
    665,335.25x = 918,162.65 × 363,529.25
  4. Step 4: Simplify right side
    665,335.25x = 333,778,977,714.87
  5. Step 5: Solve for x
    x = 333,778,977,714.87/665,335.25
  6. Step 6: Final answer
    x = 501,670.37

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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.