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Finding the Fourth Proportional to 678,714.66, 936,633.93 and 372,798.21

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Solution

The fourth proportional to 678,714.66, 936,633.93 and 372,798.21 is: 514,465.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,714.66 : 936,633.93 = 372,798.21 : x
  2. Step 2: Convert to fraction form
    678,714.66/936,633.93 = 372,798.21/x
  3. Step 3: Cross multiply
    678,714.66x = 936,633.93 × 372,798.21
  4. Step 4: Simplify right side
    678,714.66x = 349,175,452,529.27
  5. Step 5: Solve for x
    x = 349,175,452,529.27/678,714.66
  6. Step 6: Final answer
    x = 514,465.76

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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.