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Finding the Fourth Proportional to 633,421.44, 873,612 and 490,567.68

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Solution

The fourth proportional to 633,421.44, 873,612 and 490,567.68 is: 676,588.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,421.44 : 873,612 = 490,567.68 : x
  2. Step 2: Convert to fraction form
    633,421.44/873,612 = 490,567.68/x
  3. Step 3: Cross multiply
    633,421.44x = 873,612 × 490,567.68
  4. Step 4: Simplify right side
    633,421.44x = 428,565,812,060.16
  5. Step 5: Solve for x
    x = 428,565,812,060.16/633,421.44
  6. Step 6: Final answer
    x = 676,588.74

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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.