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Finding the Fourth Proportional to 520,392.98, 718,262.34 and 338,788.69

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Solution

The fourth proportional to 520,392.98, 718,262.34 and 338,788.69 is: 467,606.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,392.98 : 718,262.34 = 338,788.69 : x
  2. Step 2: Convert to fraction form
    520,392.98/718,262.34 = 338,788.69/x
  3. Step 3: Cross multiply
    520,392.98x = 718,262.34 × 338,788.69
  4. Step 4: Simplify right side
    520,392.98x = 243,339,154,178.82
  5. Step 5: Solve for x
    x = 243,339,154,178.82/520,392.98
  6. Step 6: Final answer
    x = 467,606.52

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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.