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Finding the Fourth Proportional to 579,640.70, 869,461.05 and 579,640.70

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Solution

The fourth proportional to 579,640.70, 869,461.05 and 579,640.70 is: 869,461.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,640.70 : 869,461.05 = 579,640.70 : x
  2. Step 2: Convert to fraction form
    579,640.70/869,461.05 = 579,640.70/x
  3. Step 3: Cross multiply
    579,640.70x = 869,461.05 × 579,640.70
  4. Step 4: Simplify right side
    579,640.70x = 503,975,011,644.74
  5. Step 5: Solve for x
    x = 503,975,011,644.74/579,640.70
  6. Step 6: Final answer
    x = 869,461.05

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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.