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Finding the Fourth Proportional to 520,703.54, 718,281.72 and 302,887.68

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Solution

The fourth proportional to 520,703.54, 718,281.72 and 302,887.68 is: 417,816.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,703.54 : 718,281.72 = 302,887.68 : x
  2. Step 2: Convert to fraction form
    520,703.54/718,281.72 = 302,887.68/x
  3. Step 3: Cross multiply
    520,703.54x = 718,281.72 × 302,887.68
  4. Step 4: Simplify right side
    520,703.54x = 217,558,682,242.77
  5. Step 5: Solve for x
    x = 217,558,682,242.77/520,703.54
  6. Step 6: Final answer
    x = 417,816.79

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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.