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Finding the Fourth Proportional to 665,843.16, 918,867.42 and 364,037.16

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Solution

The fourth proportional to 665,843.16, 918,867.42 and 364,037.16 is: 502,373.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,843.16 : 918,867.42 = 364,037.16 : x
  2. Step 2: Convert to fraction form
    665,843.16/918,867.42 = 364,037.16/x
  3. Step 3: Cross multiply
    665,843.16x = 918,867.42 × 364,037.16
  4. Step 4: Simplify right side
    665,843.16x = 334,501,885,993.33
  5. Step 5: Solve for x
    x = 334,501,885,993.33/665,843.16
  6. Step 6: Final answer
    x = 502,373.39

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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.