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Finding the Fourth Proportional to 561,330.69, 775,455.98 and 485,747.97

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Solution

The fourth proportional to 561,330.69, 775,455.98 and 485,747.97 is: 671,041.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,330.69 : 775,455.98 = 485,747.97 : x
  2. Step 2: Convert to fraction form
    561,330.69/775,455.98 = 485,747.97/x
  3. Step 3: Cross multiply
    561,330.69x = 775,455.98 × 485,747.97
  4. Step 4: Simplify right side
    561,330.69x = 376,676,165,680.62
  5. Step 5: Solve for x
    x = 376,676,165,680.62/561,330.69
  6. Step 6: Final answer
    x = 671,041.46

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1.5x scale

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.