Home / 812,415.16-1,218,871.86-363,513.88

Finding the Fourth Proportional to 812,415.16, 1,218,871.86 and 363,513.88

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Solution

The fourth proportional to 812,415.16, 1,218,871.86 and 363,513.88 is: 545,382.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,415.16 : 1,218,871.86 = 363,513.88 : x
  2. Step 2: Convert to fraction form
    812,415.16/1,218,871.86 = 363,513.88/x
  3. Step 3: Cross multiply
    812,415.16x = 1,218,871.86 × 363,513.88
  4. Step 4: Simplify right side
    812,415.16x = 443,076,839,051.42
  5. Step 5: Solve for x
    x = 443,076,839,051.42/812,415.16
  6. Step 6: Final answer
    x = 545,382.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.