Home / 817,765.09-1,226,898.80-418,686.11

Finding the Fourth Proportional to 817,765.09, 1,226,898.80 and 418,686.11

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Solution

The fourth proportional to 817,765.09, 1,226,898.80 and 418,686.11 is: 628,157.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,765.09 : 1,226,898.80 = 418,686.11 : x
  2. Step 2: Convert to fraction form
    817,765.09/1,226,898.80 = 418,686.11/x
  3. Step 3: Cross multiply
    817,765.09x = 1,226,898.80 × 418,686.11
  4. Step 4: Simplify right side
    817,765.09x = 513,685,490,779.99
  5. Step 5: Solve for x
    x = 513,685,490,779.99/817,765.09
  6. Step 6: Final answer
    x = 628,157.76

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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.