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Finding the Fourth Proportional to 665,854.16, 918,882.60 and 364,048.16

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Solution

The fourth proportional to 665,854.16, 918,882.60 and 364,048.16 is: 502,388.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,854.16 : 918,882.60 = 364,048.16 : x
  2. Step 2: Convert to fraction form
    665,854.16/918,882.60 = 364,048.16/x
  3. Step 3: Cross multiply
    665,854.16x = 918,882.60 × 364,048.16
  4. Step 4: Simplify right side
    665,854.16x = 334,517,519,786.02
  5. Step 5: Solve for x
    x = 334,517,519,786.02/665,854.16
  6. Step 6: Final answer
    x = 502,388.57

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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.