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Finding the Fourth Proportional to 551,878.67, 761,280.96 and 347,578.54

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Solution

The fourth proportional to 551,878.67, 761,280.96 and 347,578.54 is: 479,462.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,878.67 : 761,280.96 = 347,578.54 : x
  2. Step 2: Convert to fraction form
    551,878.67/761,280.96 = 347,578.54/x
  3. Step 3: Cross multiply
    551,878.67x = 761,280.96 × 347,578.54
  4. Step 4: Simplify right side
    551,878.67x = 264,604,925,356.33
  5. Step 5: Solve for x
    x = 264,604,925,356.33/551,878.67
  6. Step 6: Final answer
    x = 479,462.14

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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.