Home / 1,209,885.20-1,814,827.80-323,421.20

Finding the Fourth Proportional to 1,209,885.20, 1,814,827.80 and 323,421.20

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Solution

The fourth proportional to 1,209,885.20, 1,814,827.80 and 323,421.20 is: 485,131.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,885.20 : 1,814,827.80 = 323,421.20 : x
  2. Step 2: Convert to fraction form
    1,209,885.20/1,814,827.80 = 323,421.20/x
  3. Step 3: Cross multiply
    1,209,885.20x = 1,814,827.80 × 323,421.20
  4. Step 4: Simplify right side
    1,209,885.20x = 586,953,784,869.36
  5. Step 5: Solve for x
    x = 586,953,784,869.36/1,209,885.20
  6. Step 6: Final answer
    x = 485,131.80

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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.