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Finding the Fourth Proportional to 720,051.16, 993,678.94 and 397,754.58

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Solution

The fourth proportional to 720,051.16, 993,678.94 and 397,754.58 is: 548,905.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,051.16 : 993,678.94 = 397,754.58 : x
  2. Step 2: Convert to fraction form
    720,051.16/993,678.94 = 397,754.58/x
  3. Step 3: Cross multiply
    720,051.16x = 993,678.94 × 397,754.58
  4. Step 4: Simplify right side
    720,051.16x = 395,240,349,434.55
  5. Step 5: Solve for x
    x = 395,240,349,434.55/720,051.16
  6. Step 6: Final answer
    x = 548,905.93

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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.