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Finding the Fourth Proportional to 613,294.82, 845,988.12 and 398,577.89

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Solution

The fourth proportional to 613,294.82, 845,988.12 and 398,577.89 is: 549,804.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,294.82 : 845,988.12 = 398,577.89 : x
  2. Step 2: Convert to fraction form
    613,294.82/845,988.12 = 398,577.89/x
  3. Step 3: Cross multiply
    613,294.82x = 845,988.12 × 398,577.89
  4. Step 4: Simplify right side
    613,294.82x = 337,192,159,834.67
  5. Step 5: Solve for x
    x = 337,192,159,834.67/613,294.82
  6. Step 6: Final answer
    x = 549,804.35

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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.