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Finding the Fourth Proportional to 565,286.70, 849,312.45 and 425,318.70

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Solution

The fourth proportional to 565,286.70, 849,312.45 and 425,318.70 is: 639,018.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,286.70 : 849,312.45 = 425,318.70 : x
  2. Step 2: Convert to fraction form
    565,286.70/849,312.45 = 425,318.70/x
  3. Step 3: Cross multiply
    565,286.70x = 849,312.45 × 425,318.70
  4. Step 4: Simplify right side
    565,286.70x = 361,228,467,127.82
  5. Step 5: Solve for x
    x = 361,228,467,127.82/565,286.70
  6. Step 6: Final answer
    x = 639,018.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.