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Finding the Fourth Proportional to 520,705.79, 718,628.08 and 299,950.71

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Solution

The fourth proportional to 520,705.79, 718,628.08 and 299,950.71 is: 413,963.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,705.79 : 718,628.08 = 299,950.71 : x
  2. Step 2: Convert to fraction form
    520,705.79/718,628.08 = 299,950.71/x
  3. Step 3: Cross multiply
    520,705.79x = 718,628.08 × 299,950.71
  4. Step 4: Simplify right side
    520,705.79x = 215,553,004,655.61
  5. Step 5: Solve for x
    x = 215,553,004,655.61/520,705.79
  6. Step 6: Final answer
    x = 413,963.14

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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.