Home / 413,829.20-620,743.80-369,214.40

Finding the Fourth Proportional to 413,829.20, 620,743.80 and 369,214.40

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Solution

The fourth proportional to 413,829.20, 620,743.80 and 369,214.40 is: 553,821.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,829.20 : 620,743.80 = 369,214.40 : x
  2. Step 2: Convert to fraction form
    413,829.20/620,743.80 = 369,214.40/x
  3. Step 3: Cross multiply
    413,829.20x = 620,743.80 × 369,214.40
  4. Step 4: Simplify right side
    413,829.20x = 229,187,549,670.72
  5. Step 5: Solve for x
    x = 229,187,549,670.72/413,829.20
  6. Step 6: Final answer
    x = 553,821.60

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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.