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Finding the Fourth Proportional to 520,038, 717,652.44 and 281,574

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Solution

The fourth proportional to 520,038, 717,652.44 and 281,574 is: 388,572.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,038 : 717,652.44 = 281,574 : x
  2. Step 2: Convert to fraction form
    520,038/717,652.44 = 281,574/x
  3. Step 3: Cross multiply
    520,038x = 717,652.44 × 281,574
  4. Step 4: Simplify right side
    520,038x = 202,072,268,140.56
  5. Step 5: Solve for x
    x = 202,072,268,140.56/520,038
  6. Step 6: Final answer
    x = 388,572.12

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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.