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Finding the Fourth Proportional to 478,505.61, 659,429.64 and 342,303.37

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Solution

The fourth proportional to 478,505.61, 659,429.64 and 342,303.37 is: 471,729.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,505.61 : 659,429.64 = 342,303.37 : x
  2. Step 2: Convert to fraction form
    478,505.61/659,429.64 = 342,303.37/x
  3. Step 3: Cross multiply
    478,505.61x = 659,429.64 × 342,303.37
  4. Step 4: Simplify right side
    478,505.61x = 225,724,986,401.31
  5. Step 5: Solve for x
    x = 225,724,986,401.31/478,505.61
  6. Step 6: Final answer
    x = 471,729.03

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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.