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Finding the Fourth Proportional to 633,483.27, 873,875.48 and 391,688.55

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Solution

The fourth proportional to 633,483.27, 873,875.48 and 391,688.55 is: 540,325.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,483.27 : 873,875.48 = 391,688.55 : x
  2. Step 2: Convert to fraction form
    633,483.27/873,875.48 = 391,688.55/x
  3. Step 3: Cross multiply
    633,483.27x = 873,875.48 × 391,688.55
  4. Step 4: Simplify right side
    633,483.27x = 342,287,017,683.31
  5. Step 5: Solve for x
    x = 342,287,017,683.31/633,483.27
  6. Step 6: Final answer
    x = 540,325.27

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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.