Home / 811,235.27-1,119,459.40-443,639.87

Finding the Fourth Proportional to 811,235.27, 1,119,459.40 and 443,639.87

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Solution

The fourth proportional to 811,235.27, 1,119,459.40 and 443,639.87 is: 612,198.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,235.27 : 1,119,459.40 = 443,639.87 : x
  2. Step 2: Convert to fraction form
    811,235.27/1,119,459.40 = 443,639.87/x
  3. Step 3: Cross multiply
    811,235.27x = 1,119,459.40 × 443,639.87
  4. Step 4: Simplify right side
    811,235.27x = 496,636,822,686.28
  5. Step 5: Solve for x
    x = 496,636,822,686.28/811,235.27
  6. Step 6: Final answer
    x = 612,198.26

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1.5x scale

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.