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Finding the Fourth Proportional to 704,676.90, 972,449.19 and 382,378.80

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Solution

The fourth proportional to 704,676.90, 972,449.19 and 382,378.80 is: 527,680.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,676.90 : 972,449.19 = 382,378.80 : x
  2. Step 2: Convert to fraction form
    704,676.90/972,449.19 = 382,378.80/x
  3. Step 3: Cross multiply
    704,676.90x = 972,449.19 × 382,378.80
  4. Step 4: Simplify right side
    704,676.90x = 371,843,954,333.17
  5. Step 5: Solve for x
    x = 371,843,954,333.17/704,676.90
  6. Step 6: Final answer
    x = 527,680.07

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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.