Home / 816,742.66-1,225,363.20-417,663.76

Finding the Fourth Proportional to 816,742.66, 1,225,363.20 and 417,663.76

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Solution

The fourth proportional to 816,742.66, 1,225,363.20 and 417,663.76 is: 626,623.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,742.66 : 1,225,363.20 = 417,663.76 : x
  2. Step 2: Convert to fraction form
    816,742.66/1,225,363.20 = 417,663.76/x
  3. Step 3: Cross multiply
    816,742.66x = 1,225,363.20 × 417,663.76
  4. Step 4: Simplify right side
    816,742.66x = 511,789,801,477.63
  5. Step 5: Solve for x
    x = 511,789,801,477.63/816,742.66
  6. Step 6: Final answer
    x = 626,623.08

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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.