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Finding the Fourth Proportional to 561,191.67, 774,448.61 and 306,542.79

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Solution

The fourth proportional to 561,191.67, 774,448.61 and 306,542.79 is: 423,031.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,191.67 : 774,448.61 = 306,542.79 : x
  2. Step 2: Convert to fraction form
    561,191.67/774,448.61 = 306,542.79/x
  3. Step 3: Cross multiply
    561,191.67x = 774,448.61 × 306,542.79
  4. Step 4: Simplify right side
    561,191.67x = 237,401,636,088.31
  5. Step 5: Solve for x
    x = 237,401,636,088.31/561,191.67
  6. Step 6: Final answer
    x = 423,031.29

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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.