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Finding the Fourth Proportional to 520,043.90, 729,636.10 and 520,043.90

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Solution

The fourth proportional to 520,043.90, 729,636.10 and 520,043.90 is: 729,636.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,043.90 : 729,636.10 = 520,043.90 : x
  2. Step 2: Convert to fraction form
    520,043.90/729,636.10 = 520,043.90/x
  3. Step 3: Cross multiply
    520,043.90x = 729,636.10 × 520,043.90
  4. Step 4: Simplify right side
    520,043.90x = 379,442,803,024.79
  5. Step 5: Solve for x
    x = 379,442,803,024.79/520,043.90
  6. Step 6: Final answer
    x = 729,636.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.