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Finding the Fourth Proportional to 583,857.28, 805,722.60 and 315,585.28

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Solution

The fourth proportional to 583,857.28, 805,722.60 and 315,585.28 is: 435,507.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,857.28 : 805,722.60 = 315,585.28 : x
  2. Step 2: Convert to fraction form
    583,857.28/805,722.60 = 315,585.28/x
  3. Step 3: Cross multiply
    583,857.28x = 805,722.60 × 315,585.28
  4. Step 4: Simplify right side
    583,857.28x = 254,274,192,323.33
  5. Step 5: Solve for x
    x = 254,274,192,323.33/583,857.28
  6. Step 6: Final answer
    x = 435,507.45

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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.