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Finding the Fourth Proportional to 613,581.79, 920,064.70 and 357,497.25

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Solution

The fourth proportional to 613,581.79, 920,064.70 and 357,497.25 is: 536,066.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,581.79 : 920,064.70 = 357,497.25 : x
  2. Step 2: Convert to fraction form
    613,581.79/920,064.70 = 357,497.25/x
  3. Step 3: Cross multiply
    613,581.79x = 920,064.70 × 357,497.25
  4. Step 4: Simplify right side
    613,581.79x = 328,920,599,178.33
  5. Step 5: Solve for x
    x = 328,920,599,178.33/613,581.79
  6. Step 6: Final answer
    x = 536,066.43

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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.