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Finding the Fourth Proportional to 583,311.60, 804,970.08 and 315,039.60

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Solution

The fourth proportional to 583,311.60, 804,970.08 and 315,039.60 is: 434,754.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,311.60 : 804,970.08 = 315,039.60 : x
  2. Step 2: Convert to fraction form
    583,311.60/804,970.08 = 315,039.60/x
  3. Step 3: Cross multiply
    583,311.60x = 804,970.08 × 315,039.60
  4. Step 4: Simplify right side
    583,311.60x = 253,597,452,015.17
  5. Step 5: Solve for x
    x = 253,597,452,015.17/583,311.60
  6. Step 6: Final answer
    x = 434,754.69

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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.