Home / 864,136.60-1,296,204.90-811,605.40

Finding the Fourth Proportional to 864,136.60, 1,296,204.90 and 811,605.40

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Solution

The fourth proportional to 864,136.60, 1,296,204.90 and 811,605.40 is: 1,217,408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,136.60 : 1,296,204.90 = 811,605.40 : x
  2. Step 2: Convert to fraction form
    864,136.60/1,296,204.90 = 811,605.40/x
  3. Step 3: Cross multiply
    864,136.60x = 1,296,204.90 × 811,605.40
  4. Step 4: Simplify right side
    864,136.60x = 1,052,006,896,346.46
  5. Step 5: Solve for x
    x = 1,052,006,896,346.46/864,136.60
  6. Step 6: Final answer
    x = 1,217,408.10

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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.