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Finding the Fourth Proportional to 745,958, 1,029,408.96 and 406,428.64

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Solution

The fourth proportional to 745,958, 1,029,408.96 and 406,428.64 is: 560,864.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,958 : 1,029,408.96 = 406,428.64 : x
  2. Step 2: Convert to fraction form
    745,958/1,029,408.96 = 406,428.64/x
  3. Step 3: Cross multiply
    745,958x = 1,029,408.96 × 406,428.64
  4. Step 4: Simplify right side
    745,958x = 418,381,283,616.61
  5. Step 5: Solve for x
    x = 418,381,283,616.61/745,958
  6. Step 6: Final answer
    x = 560,864.40

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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.