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Finding the Fourth Proportional to 520,827.22, 780,347.94 and 349,728.22

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Solution

The fourth proportional to 520,827.22, 780,347.94 and 349,728.22 is: 523,992.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,827.22 : 780,347.94 = 349,728.22 : x
  2. Step 2: Convert to fraction form
    520,827.22/780,347.94 = 349,728.22/x
  3. Step 3: Cross multiply
    520,827.22x = 780,347.94 × 349,728.22
  4. Step 4: Simplify right side
    520,827.22x = 272,909,696,036.87
  5. Step 5: Solve for x
    x = 272,909,696,036.87/520,827.22
  6. Step 6: Final answer
    x = 523,992.77

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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.