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Finding the Fourth Proportional to 520,703.29, 718,281.37 and 302,887.43

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Solution

The fourth proportional to 520,703.29, 718,281.37 and 302,887.43 is: 417,816.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,703.29 : 718,281.37 = 302,887.43 : x
  2. Step 2: Convert to fraction form
    520,703.29/718,281.37 = 302,887.43/x
  3. Step 3: Cross multiply
    520,703.29x = 718,281.37 × 302,887.43
  4. Step 4: Simplify right side
    520,703.29x = 217,558,398,176.18
  5. Step 5: Solve for x
    x = 217,558,398,176.18/520,703.29
  6. Step 6: Final answer
    x = 417,816.45

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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.