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Finding the Fourth Proportional to 665,890.89, 918,929.43 and 364,084.89

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Solution

The fourth proportional to 665,890.89, 918,929.43 and 364,084.89 is: 502,437.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,890.89 : 918,929.43 = 364,084.89 : x
  2. Step 2: Convert to fraction form
    665,890.89/918,929.43 = 364,084.89/x
  3. Step 3: Cross multiply
    665,890.89x = 918,929.43 × 364,084.89
  4. Step 4: Simplify right side
    665,890.89x = 334,568,320,439.31
  5. Step 5: Solve for x
    x = 334,568,320,439.31/665,890.89
  6. Step 6: Final answer
    x = 502,437.15

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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.