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Finding the Fourth Proportional to 508,847.67, 766,929.02 and 438,617.94

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Solution

The fourth proportional to 508,847.67, 766,929.02 and 438,617.94 is: 661,079.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,847.67 : 766,929.02 = 438,617.94 : x
  2. Step 2: Convert to fraction form
    508,847.67/766,929.02 = 438,617.94/x
  3. Step 3: Cross multiply
    508,847.67x = 766,929.02 × 438,617.94
  4. Step 4: Simplify right side
    508,847.67x = 336,388,824,685.53
  5. Step 5: Solve for x
    x = 336,388,824,685.53/508,847.67
  6. Step 6: Final answer
    x = 661,079.62

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.