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Finding the Fourth Proportional to 520,654.91, 718,291.80 and 339,300.77

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Solution

The fourth proportional to 520,654.91, 718,291.80 and 339,300.77 is: 468,096.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,654.91 : 718,291.80 = 339,300.77 : x
  2. Step 2: Convert to fraction form
    520,654.91/718,291.80 = 339,300.77/x
  3. Step 3: Cross multiply
    520,654.91x = 718,291.80 × 339,300.77
  4. Step 4: Simplify right side
    520,654.91x = 243,716,957,233.23
  5. Step 5: Solve for x
    x = 243,716,957,233.23/520,654.91
  6. Step 6: Final answer
    x = 468,096.92

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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.