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Finding the Fourth Proportional to 413,833.20, 620,749.80 and 369,218.40

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Solution

The fourth proportional to 413,833.20, 620,749.80 and 369,218.40 is: 553,827.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,833.20 : 620,749.80 = 369,218.40 : x
  2. Step 2: Convert to fraction form
    413,833.20/620,749.80 = 369,218.40/x
  3. Step 3: Cross multiply
    413,833.20x = 620,749.80 × 369,218.40
  4. Step 4: Simplify right side
    413,833.20x = 229,192,247,956.32
  5. Step 5: Solve for x
    x = 229,192,247,956.32/413,833.20
  6. Step 6: Final answer
    x = 553,827.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.