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Finding the Fourth Proportional to 431,859.12, 595,657.08 and 374,395.72

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Solution

The fourth proportional to 431,859.12, 595,657.08 and 374,395.72 is: 516,398.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,859.12 : 595,657.08 = 374,395.72 : x
  2. Step 2: Convert to fraction form
    431,859.12/595,657.08 = 374,395.72/x
  3. Step 3: Cross multiply
    431,859.12x = 595,657.08 × 374,395.72
  4. Step 4: Simplify right side
    431,859.12x = 223,011,461,339.70
  5. Step 5: Solve for x
    x = 223,011,461,339.70/431,859.12
  6. Step 6: Final answer
    x = 516,398.64

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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.