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Finding the Fourth Proportional to 520,066.40, 729,076 and 520,066.40

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Solution

The fourth proportional to 520,066.40, 729,076 and 520,066.40 is: 729,076

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,066.40 : 729,076 = 520,066.40 : x
  2. Step 2: Convert to fraction form
    520,066.40/729,076 = 520,066.40/x
  3. Step 3: Cross multiply
    520,066.40x = 729,076 × 520,066.40
  4. Step 4: Simplify right side
    520,066.40x = 379,167,930,646.40
  5. Step 5: Solve for x
    x = 379,167,930,646.40/520,066.40
  6. Step 6: Final answer
    x = 729,076

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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.